NPK in india agriculture biblography (1971-1975) 

 -  1978 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>52671 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Dewey Class. No.: </label>J:24aN7, L8