HE LIBRA. OF CONGRESS T THE LIBRARY OF CONGRESS, RES LIBRARY OF CONGRESS ES S THE LIBRARY OF CONGRESS THE LIBRARY OF CONGRESS AES S THE LIBRARY OF CONGRESS THE LIBRARY OF CONGRESS THE LIBRARY OF CONGR THE LIBRARY OF CONGRE RAR LIBRARY OF CONGRI ARY о THEO LIBRARY OF CONGRESS CONGRESS, THE LIBRARY OF CONGRES THE LIBRARY OF CONGRESS, RE CK OF CONGRESS THE LIBRARY OF CONGRESS LIBRA AR THE LIBRARY OF CONGR CONGRESS THE LIBRARY OF CONGR LIBRA ES LIBRARY OF CONGRESS AE "HE LIBRARY OF CONGRESS THE LIBRARY OF CONGRES HE LIBRARY OF CONGRESS HE LIBRARY OF CONGRESSER FEET ES THE LIBRARY OF CONGRESS HE LIBRARY OF CONGRES ES ME Co 1 ME LIBRAT 1972 NASA AUTHORIZATION HEARINGS BEFORE THE SUBCOMMITTEE ON ADVANCED RESEARCH AND TECHNOLOGY U. S. Congress. House. 1 OF THE COMMITTEE ON SCIENCE AND ASTRONAUTICS U.S. HOUSE OF REPRESENTATIVES NINETY-SECOND CONGRESS FIRST SESSION ON H.R. 3981 (Superseded by H.R. 7109) MARCH 18 AND 23, 1971 [No. 2] Part 4 Printed for the use of the Committee on Science and Astronautics 59-311 O U.S. GOVERNMENT PRINTING OFFICE WASHINGTON: 1971 |