1974 National Science Foundation authorization :
hearings before the Subcommittee on Science, Research, and Development of the Committee on Science and Astronautics, U.S. House of Representatives, Ninety-third Congress, first session on H.R. 3610-3731, superseded by H.R. 7782 : February 27, 28, March 1, 6, 7, 8, 1973.

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