The social and economic implications of large-scale introduction of new varieties of food grain 

 - Geneva  United Nations Research Institute for Social Development  1974 
 - ix,55p.  21cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Grain
<br/><br/><label>LC Class. No.: </label>IDS PAM SB192.U531