//-->
Eine neue Etappe der internationalen Beziehungen
Lebedev, Nikolaj Ivanovič, (1978)
Soviet foreign trade organization, operations, and policy, 1918-1971
Smith, Glen Alden, (1973)
East-West Trade : Itś strategic implications. Analysis and Inventory of Congressional Documents 1959-1963
Clabaugh, Samuel F., (1964)