COMECON Foreign Trade Data 1980Institute Vienna, Unknown, Vienna Institute for Comparative EconomiInbunden, 1981936 kr
COMECON Data 1990Institute Vienna, The Vienna Institute for Comparative Eco, The Vienna Institute for Comparative Economic StudiesInbunden, 1991936 kr
COMECON Foreign Trade Data 1980Institute Vienna, Unknown, Vienna Institute for Comparative EconomiInbunden, 1981936 kr
COMECON Foreign Trade Data 1984Vienna, Lsi, Vienna Institute for Comparative EconomiInbunden, 1985937 kr