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Senate Hearing, 91st Congress - National Science Foundation authorization, 1971: hearings before the Special Subcommittee on National Science Foundation of the Committee on Labor and Public Welfare, United States Senate, Ninety-first Congress, second session, on S. 3700, to authorize appropriations for activities of the National Science Foundation; S. 3412, to authorize appropriations for activities of the National Science Foundation, April 16, and 23, 1970.