As of July 1, 1981 Revised as of July 1, 1980 Is Replaced by two Volumes: U.S. GOVERNMENT PRINTING OFFICE WASHINGTON: 1981 For sale by the Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. 20402 Subscription Price: $525 per year; $656.25 for foreign mailing. Single copies vary in price. |