http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
hearings, Ninety-second Congress, first session. June 1 and 2, 1971
Subcommittee on National Security Policy and Scientific Developments.
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United States. Congress. House. Committee on Foreign Affairs. Subcommittee on National Security Policy and Scientific Developments.