NPK in Indian agriculture, (1971-1975)  a bibliography of nitrogen, phosphorus,  potassium and related factors in crops, soils, fertillisers and manures 

 - New Delhi  ENSP  1978 
 - xxxii,797 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture<br/>Bibliography<br/>India<br/>Indian agriculture<br/>Nitrogen<br/>NPK<br/>Phosphorus<br/>Potassium
<br/><br/><label>Dewey Class. No.: </label>016.630954  / NPK