India. National Sample Survey, Directorate of - <br/><br/>
Consolidated results of surveys for estimation of areas brought under improved agricultural practices 1961-62  / 

 - New Delhi:  The Auth.,  1963 
 - v.p. 
 - Surveys in development areas   series C.2, no.3 .
<br/><br/><label>Dewey Class. No.: </label>SF