The Council for Mutual Economic Aid : 1949-1951 : excerpts of documents with commentary / Karel Kaplan. Kaplan, Karel, 1928- Council for Mutual Economic Assistance. 338.91 COU Includes bibliographical references. [s.l. : s.n.], 1979. 1979. 1979 Text 107 P. : eng Research project "The experience of the Prague spring 1968", working study no. 4 "Experience of the Prague spring 1968" : working study ; no. 4. Czechoslovakia Economic policy. Czechoslovakia Foreign economic relations. Czechoslovakia Economic integration.