P.S. Mani <br/><br/>
Guide for professional agricultural extension work under training and visit system for village extension workers 

 - New Delhi  Directorate of extension ministry of agriculture department of agricultre and co-Operative  1992 
 - 154p 
<br/><br/><br/>ENGLISH 
<br/><br/><label>Dewey Class. No.: </label>630.715  / MAN