Helsinki, 1. August 1975
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Conference on Security and Cooperation in Europe (1975 : Helsinki, Finland)DefensesInternational SecurityNuclear disarmamentWorld politicsConference on Security and Cooperation in Europe (1975 : Helsinki, Finland) (uri) http://id.loc.gov/authorities/names/n2018059631 (uri) http://viaf.org/viaf/sourceID/LC|n2018059631