1971 NATIONAL SCIENCE HEARINGS BEFORE THE SUBCOMMITTEE ON SCIENCE, RESEARCH, AND DEVELOPMENT. SCIENCE AND ASTRONAUTICS. NINETY-FIRST CONGRESS SECOND SESSION ON H.R. 15696 Superseded by H.R. 16595 FEBRUARY 17, 18, 19, 20, 24, 25; MARCH 19, 1970 [No. 17] 43-211 O Printed for the use of the Committee on Science and Astronautics U.S. GOVERNMENT PRINTING OFFICE WASHINGTON: 1970 |