00801nam a2200193Ia 4500008004100000010001300041020001800054040001700072082002500089100002100114245009700135260005100232300001400283440005900297500016000356650005300516700001700569700002100586190327s9999||||xx |||||||||||||| ||und||  a73-19352  a0-8018-1669-6  aNITILcNITIL  221sta339.2018bK91S  aKravis, Irving B 2aA System of international comparisons of gross product and purchasing powercIrving B Kravis  aBaltimorebJohn Hopkins University Pressc1975  axi, 294p.  aUnited Nations International Comparison Project; Phase  aProduced by the Statistical office of the United Nations the World Bank and the International Comparison unit of the Unit of the University of Pennsylvania  aIncome; Gross national product; Purchasing power  aHeston, Alan  aKenessey, Zoltan