International comparisons of real product and purchasing power - Kravis, Irving B.; Heston, Alan W.; Summers, Robert, 1922-; United Nations. Statistical Office; World Bank.; United Nations International Comparison Project (Baltimore : Published for the World Bank [by] the Johns Hopkins University Press, 1978)
At head of title: United Nations International Comparison Project, phase II.
Περιέχει βιβλιογραφία και ευρετήριο.
Keywords: Income; Gross national product; Purchasing power