compendium of existing phase diagrams is needed in each area, as well as a capability for predicting additional information in a reliable, timely fashion. Fourth, advanced data on the performance limitations on structural materials is badly needed. Theoretical developments in the field of fracture mechanics in recent years have provided a firm basis for greater understanding of the mechanical strength of structural materials in actual-use situations, and this understanding needs to be translated into better design. Here we are referring to structures such as highway bridges, railroad track, suspension systems, pressure vessels for nuclear reactors, and bodies of automobiles. What is needed is a compilation of data on the pertinent mechanical properties of the materials used to build these structures, which will serve as input to the analytic procedures used by engineers as they design them. We are also considering extending the activities of existing data centers and initiating additional projects to provide data for the characterization and understanding of water quality. The Council on Environmental Quality estimates that the United States will spend $110 billion for water pollution clean-up for the period 1975-1984. The ability to use reliable physical properties data to extend the measurement capability by modelling the effects of water pollutants is an important contribution to bringing pollution under control. Such data are fundamental to understanding how substances enter water bodies, how long they reside, and how they ultimately interact with other dissolved materials. As I indicated earlier, we see a definite need to improve our procedures for disseminating data via computers. Users of technical information are beginning to shift from traditional books and journals to modern computer-based methods for day-to-day acquisition and use of the data they need. Computer delivery of data offers several advantages over traditional methods, e.g., (1) ability to search large files for a substance whose properties met a number of specified conditions; (2) rapidity and low cost of up-dates and corrections; and (3) facility for direct interfacing of data files with manipulation or design programs which utilize the data. Computer-based dissemination of numerical data presents a number of difficult developmental problems which require solution before a viable delivery system can be installed. Suitable procedures for analytical representation of various types of data and for interpolation and extrapolation must be developed. Flexible search and retrieval programs are required, and a sufficiently general data base management system will be needed. Once the developmental phase is completed, the operational costs of the computer-based delivery system will be financed by user charges, in accordance with our usual policy. Mr. Chairman, I hope that these examples of potential areas for future program activity will serve to illustrate the vitality of our program and the continuing need for specific reference data. We ask your continued support for these creative activities so that the evaluated results of research can be moved reliably and efficiently into technological improvements which will benefit our country, our society, and our quality of life. The National Standard Reference Data System was established in 1963 as a means of coordinating on a national scale the production and dissemination of critically evaluated reference data in the physical sciences. Under the Standard Reference Data Act (Public Law 90-396) the National Bureau of Standards of the U. S. Department of Commerce has the primary responsibility in the Federal Government for providing reliable scientific and technical reference data. The Office of Standard Reference Data of NBS coordinates a complex of data evaluation centers, located in university, industrial, and other Government laboratories as well as within the National Bureau of Standards, which are engaged in the compilation and critical evaluation of numerical data on physical and chemical properties retrieved from the world scientific literature. The primary focus of the NSRDS is on well-defined physical and chemical properties of well-characterized materials or systems. An effort is made to assess the accuracy of data reported in the primary research literature and to prepare compilations of critically evaluated data which will serve as reliable and convenient reference sources for the scientific and technical community. This Publication List includes NSRDS data compilations, critical reviews, and related publications which are available from various sources. instructions for publications listed are given on pp. 17-25. be obtained from Office of Standard Reference Data Prices and ordering Further information may I. Journal of Physical and Chemical Reference Data Reprints and Supplements to Volumes 1 to 6 (1972-1977) Reprints from Volume 1 (1972) 1. Gessous Diffusion Coefficients, T. R. Marrero and E. A. Mason, Vol. 1, No. 1, pp. 1-118 (1972) $7.00 2. Selected Values of Critical Supersaturation for Nucleation of Liquids from the Vapor, G. M. Pound, Vol. 1, No. 1, pp. 119-134 (1972) $3.00 3. Selected Values of Evaporation and Condensation Coefficients of Simple Substances, G. M. Pound, Vol. 1, No. 1, pp. 135-146 (1972) $3.00 4. Atlas of the Observed Absorption Spectrum of Carbon Monoxide between 1080 and 1900 Å, S. G. Tilford and J. D. Simmons, Vol. 1, No. 1. pp. 147-188 (1972) $4.50 5. Tables of Molecular Vibrational Frequencies, Part 5, T. Shimanouchi, Vol. 1, No. 1, pp. 189-216 (1972) $4.00 6. Selected Values of Heats of Combustion and Heats of Formation of Organic Compounds Containing the Elements C, H, N, O, P, and S, Eugene S. Dolmaiski, Vol. 1, No. 2, pp. 221-278 (1972) $5.00 7. Thermal Conductivity of the Elements, C. Y. Ho, R. W. Powell, and P. E. Liley, Vol. 1, No. 2, pp. 279-422 (1972) $7.50 8. The Spectrum of Molecular Oxygen, Paul H. Krupenie, Vol. 1, No. 2. pp. 423-534 (1972) $6.50 9. A Critical Review of the Gas-Phase Reaction Kinetics of the Hydroxyl Radical, W. E. Wilson, Jr., Vol. 1, No. 2, pp. 535-574 (1972) $4.50 10. Molten Salts: Volume 3, Nitrates, Nitrites, and Mixtures, Electrical Conductance, Density, Viscosity, and Surface Tension Data, G. J. Janz, Ursula Krebs, H. F. Siegenthaler, and R. P. T. Tomkins, Vol. 1, No. 3, pp. 581-746 (1972) $8.50 11. High Temperature Properties and Decomposition of Inorganic Salts-Part 3, Nitrates and Nitrites, Kurt H. Stern, Vol. 1, No. 3, pp. 747-772 (1972) $4.00 12. High-Pressure Calibration: A Critical Review, D. L Decker, W. A. Bassett, L. Merrill, H. T. Hall and J. D. Barnett, Vol. 1, No. 3, pp. 773-836 (1972) $5.00 13. The Surface Tension of Pure Liquid Compounds, Joseph J. Jasper, Vol. 1, No. 4, pp. 841-1009 (1972) $8.50 14. Microwave Spectra of Molecules of Astrophysical interest, I. Formaldehyde, Formamide, and Thioformaldehyde, Donald R. Johnson, Frank J. Lovas, and William H. Kirchhoff, Vol. 1, No. 4. pp. 1011-1045 (1972) $4.50 15. Osmotic Coefficients and Mean Activity Coefficients of Uni-univalent Electrolytes in Water at 25°C, Walter J. Hamer and Yung Chi Wu, Vol. 1, No. 4, pp. 1047-1099 (1972) $5.00 16. The Viscosity and Thermal Conductivity Coefficients of Gaseous and Liquid Fluorine, H. J. M. Hanley and R. Prydz, Vol. 1, No. 4. pp. 1101-1113 (1972) $3.00 Reprints from Volume 2 (1973) 17. Microwave Spectra of Molecules of Astrophysical Interest. II. Methylenimine, William H. Kirchhoff, Donald R. Johnson, and Frank J. Lovas, Vol. 2, No. 1, pp. 1-10 (1973) $3.00 18. Analysis of Specific Heat Data in the Critical Region of Magnetic Solids, F. J. Cook, Vol. 2, No. 1, pp. 11-24 (1973) $3.00 19. Evaluated Chemical Kinetic Rate Constants for Various Gas Phase Reactions, Keith Schofield, Vol. 2, No. 1, pp. 25-84 (1973) $5.00 20. Atomic Transition Probabilities for Forbidden Lines of the Iron Group Elements. (A Critical Data Compilation for Selected Lines), M. W. Smith and W. L. Wiese, Vol. 2, No. 1, pp. 85-120 (1973) $4.50 21. Tables of Molecular Vibrational Frequencies, Part 6, T. Shimanouchi, Vol. 2, No. 1, pp. 121-162 (1973) $4.50 22. Compilation of Energy Band Gaps in Elemental and Binary Compound Semiconductors and Insulators, W. H. Strehlow and E. L. Cook, Vol. 2, No. 1, pp. 163-200 (1973) $4.50 23. Microwave Spectra of Molecules of Astrophysical Interest, III. Methanol, R. M. Lees, F. J. Lovas, W. H. Kirchhoff, and D. R. Johnson, Vol. 2, No. 2, pp. 205-214 (1973) $3.00 24. Microwave Spectra of Molecules of Astrophysical Interest, IV. Hydrogen Sulfide, Paul Helminger, Frank C. De Lucia, and William H. Kirchhoff, Vol. 2, No. 2, pp. 215-224 (1973) $3.00 25. Tables of Molecular Vibrational Frequencies, Part 7, T. Shimanouchi, Vol. 2, No. 2, pp. 225-256 (1973) $4.00 28. Energy Levels of Neutral Hellum (He I), W. C. Martin, Vol. 2, No. 2, pp. 257-266 (1973) $3.00 27. Survey of Photochemical and Rate Data for Twenty-eight Reactions of Interest in Atmosphere Chemistry, R. F. Hampson, Editor, W. Braun, R. L. Brown, D. Garvin, J. T. Herron, R. E. Huie, M. J. Kurylo, A H. Laufer, J. D. McKinley, H. Okabe, M. D. Sheer, W. Tsang, and D. H. Stedman, Vol. 2, No. 2, pp. 267-312 (1973) $4.50 28. Compilation of the Static Dielectric Constant of Inorganic Solids, K. F. Young and H. P. R. Frederikse, Vol. 2, No. 2, pp. 313-410 (1973) $6.50 29. Soft X-Ray Emission Spectra of Metallic Solids: Critical Review of Selected Systems, A. J. McAlister, R. C. Dobbyn, J. R. Cuthill, and M. L. Williams, Vol. 2, No. 2, pp. 411-426 (1973) $3.00 30. Ideal Gas Thermodynamic Properties of Ethane and Propane, J. Chao, R. C. Wilhoit, and B. J. Zwolinski, Vol. 2, No. 2, pp. 427-438 (1973) $3.00 31. An Analysis of Coexistence Curve Data for Several Binary Liquid Mixtures Near Their Critical Points, A. Stein and G. F. Allen, Vol. 2, No. 3, pp. 443-466 (1973) $4.00 32. Rate Constants for the Reactions of Atomic Oxygen (O3P) with Organic Compounds in the Gas Phase, John T. Herron and Robert E. Hule, Vol. 2, No. 3. pp. 467-518 (1973) $5.00 33. First Spectra of Neon, Argon, and Xenon 138 in the 1.2-4.0 μm Region, Curtis J. Humphreys, Vol. 2, No. 3, pp. 519-530 (1973) $3.00 34. Elastic Properties of Metals and Alloys, I. Iron, Nickel, and Iron-Nickel Alloys, H. M. Ledbetter and R. P. Reed, Vol. 2, No. 3, pp. 531-618 (1973) $6.00 35. The Viscosity and Thermal Conductivity Coefficients of Dilute Argon, Krypton, and Xenon, H. J. M. Hanley, Vol. 2, No. 3, pp. 619-642 (1973) $4.00 36. Diffusion in Copper and Copper Alloys. Part I. Volume and Surface Self-Diffusion in Copper, Daniel B. Butrymowicz, John R. Manning, and Michael E. Read, Vol. 2, No. 3, pp. 643-656 (1973) $3.00 37. The 1973 Least Squares Adjustment of the Fundamental Constants, E. Richard Cohen and B. N. Taylor, Vol. 2, No. 4, pp. 663-734 (1973) $5.50 38. The Viscosity and Thermal Conductivity Coefficients of Dilute Nitrogen and Oxygen, H. J. M. Hanley and James F. Ely, Vol. 2, No. 4, pp. 735-756 (1973) $4.00 39. Thermodynamic Properties of Nitrogen Including Liquid and Vapor Phases from 63K to 2000K with Pressures to 10,000 Bar, Richard T. Jacobsen and Richard B. Stewart, Vol. 2, No. 4, pp. 757-922 (1973) $8.50 40. Thermodynamic Properties of Hellum 4 from 2 to 1500K at Pressures to 10o Pa, Robert D. McCarty, Vol. 2, No. 4, pp. 923-1042 (1973) $7.00 Reprints from Volume 3 (1974) 41. Molten Salts: Volume 4, Part 1, Fluorides and Mixtures, Electrical Conductance, Density, Viscosity, and Surface Tension Data, G. J. Janz, G. L. Gardner, Ursula Krebs, and R. P. T. Tomkins, Vol. 3, No. 1, pp. 1-115 (1974) $7.00 42. Ideal Gas Thermodynamic Properties of Eight Chloro- and Fluoromethanes, A. S. Rodgers, J. Chao, R. C. Wilhoit, and B. J. Zwolinski, Vol. 3, No. 1, pp. 117-140 (1974) $4.00 43. Ideal Gas Thermodynamic Properties of Six Chloroethanes, J. Chao, A. S. Rodgers, R. C. Wilhoit, and B. J. Zwolinski, Vol. 3, No. 1, pp. 141-162 (1974) $4.00 44. Critical Analysis of Heat-Capacity Data and Evaluation of Thermodynamic Properties of Ruthenium, Rhodium, Palladium, Iridium, and Platinum from 0 to 300K. A Survey of the Literature Data on Osmium, George T. Furukawa, Martin L. Reilly, and John S. Gallagher, Vol. 3, No. 1, pp. 163-209 (1974) $4.50 45. Microwave Spectra of Molecules of Astrophysical Interest, V. Water Vapor, Frank C. De Lucia, Paul Helminger, and William H. Kirchhoff, Vol. 3, No. 1, pp. 211-219 (1974) $3.00 46. Microwave Spectra of Molecules of Astrophysical Interest, VI. Carbonyl Sulfide and Hydrogen Cyanide, Arthur G. Maki, Vol. 3, No. 1, pp. 221-244 (1974) $4.00 47. Microwave Spectra of Molecules of Astrophysical interest, VII. Carbon Monoxide, Carbon Monosulfide, and Silicon Monoxide, Frank J. Lovas and Paul H. Krupenie, Vol. 3, No. 1, pp. 245-257 (1974) $3.00 48. Microwave Spectra of Molecules of Astrophysical Interest, VIII. Sulfur Monoxide, Eberhard Tiemann, Vol. 3, No. 1, pp. 259-268 (1974) $3.00 49. Tables of Molecular Vibrational Frequencies, Part 8, T. Shimanouchi, Vol. 3, No. 1, pp. 269-308 (1974) $4.50 1 50. JANAF Thermochemical Tables, 1974 Supplement, M. W. Chase, J. L Curnutt, A. T. Hu, H. Prophet, A. N. Syverud, and L C. Walker, Vol. 3, No. 2, pp. 311-480 (1974) $8.50 51. High Temperature Properties and Decomposition of Inorganic Salts, Part 4. Oxy-Salts of the Halogena, Kurt H. Stern, Val. 3, No. 2, pp. 481-526 (1974) $4.50 52. Diffusion in Copper and Copper Alloys, Part II. Copper-Silver and Copper-Gold Systems, Daniel B, Butrymowicz, John R. Manning, and Michael E. Read, Vol. 3, No. 2, pp. 527-602 (1974) $5.50 53. Microwave Spectral Tables, I. Diatomic Molecules, Frank J. Lovas and Eberhard Tiemann, Vol. 3, No. 3, pp. 609-770 (1974) $8.50 54. Ground Levels and lonization Potentials for Lanthanide and Actinide Atoms and lons, W. C. Martin, Lucy Hagan, Joseph Reader, and Jack Sugar, Vol. 3. No. 3, pp. 771-780 (1974) $3.00 55. Behavior of the Elements at High Pressures, John Francis Cannon, Vol. 3, No. 3, pp. 781-824 (1974) $4.50 56. Reference Wavelengths from Atomic Spectra in the Range 15 Å to 25000 X. Victor Kaufman and Bengt Edlén, Vol. 3, No. 4, pp. 825-895 (1974) $5.50 57. Elastic Properties of Metals and Alloys, II. Copper, H. M. Ledbetter and E. R. Naimon, Vol. 3, No. 4, pp. 897-935 (1974) $4.50 58. A Critical Review of H-Atom Transfer in the Liquid Phase: Chlorine Atom, Alkyl Trichloromethyl, Alkoxy, and Alkylperoxy Radicals, D. G. Hendry, T. Mill, L. Piszkiewicz, J. A. Howard, and H. K. Eigenmann, Vol. 3, No. 4, pp. 937-978 (1974) $4.50 59. The Viscosity and Thermal Conductivity Coefficients for Dense Gaseous and Liquid Argon, Krypton, Xenon, Nitrogen, and Oxygen, H. J. M. Hanley, R. D. McCarty, and W. M. Haynes, Vol. 3, No. 4, pp. 979-1017 (1974) $4.50 Reprints from Volume 4 (1975) 60. JANAF Thermochemical Tables, 1975 Supplement, M. W. Chase, J. L. Curnutt, H. Prophet, R. A. McDonald, and A. N. Syverud, Vol. 4, No. 1, pp. 1-175 (1975) $8.50 61. Diffusion in Copper and Copper Alloys, Part III. Diffusion in Systems Involving Elements of the Groups IA, IA, IIIB, IVB, VB, VIB, and VIIB, Daniel B. Butrymowicz, John R. Manning, and Michael E. Read, Vol. 4, No. 1, pp. 177-249 (1975) $6.00 62. Ideal Gas Thermodynamic Properties of Ethylene and Propylene, Jing Chao and Bruno J. Zwolinski, Vol. 4, No. 1, pp. 251-261 (1975) $3.00 63. Atomic Transition Probabilities for Scandium and Titanium (A Critical Data Compilation of Allowed Lines), W. L. Wiese and J. R. Fuhr, Vol. 4, No. 2, pp. 263-352 (1975) $6.00 64. Energy Levels of Iron, Fe I through Fe XXVI, Joseph Reader and Jack Sugar, Vol. 4, No. 2, pp. 353-440 (1975) $6.00 65. Ideal Gas Thermodynamic Properties of Six Fluoroethanes, S. S. Chen, A. S. Rodgers, J. Chao, R. C. Wilhoit, and B. J. Zwolinski, Vol. 4, No. 2, pp. 441-456 (1975) $3.00 66. Ideal Gas Thermodynamic Properties of the Eight Bromo. and lodomethanes, S. A. Kudchadker and A. P. Kudchadker, Vol. 4, No. 2, pp. 457-470 (1975) $3.00 67. Atomic Form Factors, Incoherent Scattering Functions, and Photon Scattering Cross Sections, J. H. Hubbell, Wm. J. Veigele, E. A. Briggs, R. T. Brown, D. T. Cromer, and R. J. Howerton, Vol. 4, No. 3, pp. 471-538 (1975) $5.50 68. Binding Energies in Atomic Negative lons, H. Hotop and W. C. Lineberger, Vol. 4, No. 3, pp. 539-576 (1975) $4.50 69. A Survey of Electron Swarm Data, J. Dutton, Vol. 4, No. 3, pp. 577-856 (1975) $12.00 70. Ideal Gas Thermodynamic Properties and Isomerization of n-Butane and Isobutane, S. S. Chen, R. C. Wilhoit, and B. J. Zwolinski, Vol. 4, No. 4, pp. 859-870 (1975) $3.00 71. Molten Salts: Volume 4, Part 2, Chlorides and Mixtures, Electrical Conductance, Density, Viscosity, and Surface Tension Data, G. J. Janz, R. P. T. Tomkins, C. B. Allen, J. R. Downey, Jr., G. L. Gardner, U. Krebs, and S. K. Singer, Vol. 4, No. 4, pp. 871-1178 (1975) $13.00 72. Property Index to Volumes 1-4 (1972-1975), Vol. 4, No. 4, pp. 1179-1192 (1975) $3.00 Reprints from Volume 5 (1976) 73. Scaled Equation of State Parameters for Gases in the Critical Region, J. M. L. Levelt-Sengers, W. L. Greer, and J. V. Sengers, Vol. 5, No. 1, pp. 1-51 (1976) $5.00 74. Microwave Spectra of Molecules of Astrophysical interest, IX. Acetaldehyde, A. Bauder, F. J. Lovas, and D. R. Johnson, Vol. 5, No. 1, pp. 53-77 (1976) $4.00 75. Microwave Spectra of Molecules of Astrophysical interest, X. Isocyanic Acid, G. Winnewisser, W. H. Hocking, and M. C. L. Gerry, Vol. 5, No. 1, pp. 79-101 (1976) $4.00 76. Diffusion in Copper and Copper Alloys, Part IV. Diffusion in Systems Involving Elements of Group VIII, Daniel B. Butrymowicz, John R. Manning, and Michael E. Read, Vol. 5, No. 1, pp. 103-200 (1976) $6.50 77. A Critical Review of the Stark Widths and Shifts of Spectral Lines from Non-Hydrogenic Atoms, N. Konjevic and J. R. Roberts, Vol. 5, No. 2, pp. 209-257 (1976) $5.00 78. Experimental Stark Widths and Shifts for Non-Hydrogenic Spectral Lines of lonized Atoms, N. Konjevic and W. L Wiese, Vol. 5, No. 2, pp. 259-308 (1976) $5.00 79. Atlas of the Absorption Spectrum of Nitric Oxide (NO) between 1420 and 1250 Å, E. Miescher and F. Alberti, Vol. 5, No. 2, pp. 309-317 (1976) $3.00 80. Ideal Gas Thermodynamic Properties of Propanone and 2-Butanone, J. Chao and B. J. Zwolinski, Vol. 5, No. 2, pp. 319-328 (1976) $3.00 81. Refractive Index of Alkall Halides and its Wavelength and Temperature Derivatives, H. H. Li, Vol. 5, No. 2, pp. 329-528 (1976) $9.50 82. Tables of Critically Evaluated Oscillator Strengths for the Lithium isoelectronic Sequence, G. A. Martin and W. L Wiese, Vol. 5, No. 3. pp. 537-570 (1976) $4.50 83. Ideal Gas Thermodynamic Properties of Six Chlorofluoromethanes, S. S. Chen, R. C. Wilhoit, and B. J. Zwolinski, Vol. 5, No. 3, pp. 571-580 (1976) $3.00 84. Survey of Superconductive Materials and Critical Evaluation of Selected Properties, B. W. Roberts, Vol. 5, No. 3, pp. 581-821 (1976) $12.50 85. Nuclear Spine and Moments, Gladys H. Fuller, Vol. 5, No. 4, pp. 835-1092 (1976) $11.50 86. Nuclear Moments and Moment Ratios as Determined by Mössbauer Spectroscopy, J. G. Stevens and B. D. Dunlop, Vol. 5, No. 4, pp. 1093-1121 (1976) $4.00 87. Rate Coefficients for lon-Molecule Reactions, I. Ions Containing C and H, L. Wayne Sieck and Sharon G. Uas, Vol. 5, No. 4, pp. 1123-1146 (1976) $4.00 88. Microwave Spectra of Molecules of Astrophysical Interest, XI. Silicon Sulfide, Eberhard Tiemann, Vol. 5, No. 4, pp. 1147-1156 (1976) $3.00 89. Property Index and Author Index to Volume 1-5 (1972-1978), Vol. 5. No. 4, pp. 1161-1183 (1976) $4.00 Reprints from Volume 6 (1977) 90. Diffusion in Copper and Copper Alloys, Part V. Diffusion in Systems Involving Elements of Group VA, Daniel B. Butrymowicz, John R. Manning, and Michael E. Read, Vol. 6, No. 1, pp. 1-50 (1977) $5.00 91. The Calculated Thermodynamic Properties of Superfluid Helium-4, James S. Brooks and Russell J. Donnelly, Vol. 6, No. 1, pp. 51-104 (1977) $5.00 92. Thermodynamic Properties of Normal and Deuterated Methanola, S. S. Chen, R. C. Wilhoit, and B. J. Zwolinski, Vol. 6, No. 1, pp. 105-112 (1977) $3.00 93. The Spectrum of Molecular Nitrogen, Alf Lofthus and Paul H. Krupenie, Vol. 6, No. 1, pp. 113-307 (1977) $9.50 94. Energy Levels of Chromium, Cr I through Cr XXIV, Jack Sugar and Charles Corliss, Vol. 6, No. 2, pp. 317-383 (1977) $5.50 95. The Activity and Osmotic Coefficients of Aqueous Calcium Chloride at 298.15 K. Bert R. Staples and Ralph L Nuttall, Vol. 6, No. 2, pp. 385-407 (1977) $4.00 96. Molten Salts: Volume 4, Part 3, Bromides and Mixtures; lodides and Mixtures-Electrical Conductance, Density, Viscosity, and Surface Tension Data, G. J. Janz, R. P. T. Tomkins, C. B. Allen, J. R. Downey, Jr.. and S. K. Singer, Vol. 6, No. 2, pp. 409-596 (1977) $9.00 97. The Viscosity and Thermal Conductivity Coefficients for Denee Gaseous and Liquid Methane, H. J. M. Hanley, W. M. Haynes, and R. D. McCarty, Vol. 6, No. 2, pp. 597-809 (1977) $3.00 |