Ray, G.L. <br/><br/>
Studies in agricultural extension and management 
by G.L.Ray 
 - Delhi  Mittal  1989 
 - 163p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural extension - India - West Bengal
<br/><br/><label>Dewey Class. No.: </label>Z12x5412 R211