(1961). Ecomomic survey of Europe in 1960: Including studies of some problems of agricultural development in Europe and the Soviet Union, Europe and the trade needs of the less developed countries and economic development in Albania and Bulgaria. Geneva: United Nations.

Ecomomic Survey of Europe in 1960: Including Studies of Some Problems of Agricultural Development in Europe and the Soviet Union, Europe and the Trade Needs of the Less Developed Countries and Economic Development in Albania and Bulgaria. Geneva: United Nations, 1961.

Ecomomic Survey of Europe in 1960: Including Studies of Some Problems of Agricultural Development in Europe and the Soviet Union, Europe and the Trade Needs of the Less Developed Countries and Economic Development in Albania and Bulgaria. Geneva: United Nations, 1961.