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Pravovye formy ėkonomičeskich svjazej SSSR so slaborazvitymi v ėkonomičeskom otnošenii stranami - Korotayev, A. P.: Legal forms of the U.S.S.R. economic relations with economically under-developed countries
Korotaev, A. P., (1961)
Problems of economic development in backward countries and areas
Itagaki, Yoichi, (1962)
Directory of Development Organizations
Wesselink, Bert,
Sino-Soviet trade
Scott, N. B., (1958)