Satvir Singh <br/><br/>
Promotors and retarders of agricultural productivity 

 -  ICSSR, New Delhi  1982 
 - 94p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>AGRICULTURAL PRODUCTIVITY - PSYCHOLOGICAL ASPECTS
<br/><br/><label>Dewey Class. No.: </label>RS.0038