Heston, Alan Kenessey, Zoltan Kravis, Irving Summer, Robert <br/><br/>
System of international comparisons of gross product and purchasing power  produced by the statistical offiec of the United Nations, World Bank and the international comparison unit of the university of Pennsylvania 

 - Baltimore  The John Hopkins university press  1975 
 - xi, 294p.; 28cm. 
<br/><br/><label>ISBN: </label>801816068 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Binary comparision<br/>Economics - purchasing power<br/>International comparision<br/>Multilateral comparision<br/>National produce - gross