http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Hearings before the Committee on Security and Cooperation in Europe, Ninety-fifth Congress, first session, on Basket II, Helsinki final act, East-West economic cooperation, January 13 and 14, 1977
Commission on Security and Cooperation in Europe.
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United States. Congress. Commission on Security and Cooperation in Europe