Prospects for East Sumatran plantation industries  a symposium 
edited by Douglas S. Paauw 
 - Southeast Asia Studies, New Haven  Yale University  1962 
 - 68 p. ; 28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture--Economic aspects--Indonesia--Sumatera Timur
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Sumatera Timur--Economic conditions