339.2018
K91S
           Kravis, Irving B
               A System of international comparisons of gross product and purchasing power \ Irving B Kravis - Baltimore : John Hopkins University Press, 1975.
               xi, 294p. - United Nations International Comparison Project; Phase .
                Produced by the Statistical office of the United Nations the World Bank and the International Comparison unit of the Unit of the University of Pennsylvania

                ISBN: 0-8018-1669-6

106739
                Subjects: Income; Gross national product; Purchasing power.