Symposium on increasing productivity, of acid soils in the Eastern region:  proceedings/ 
edited by S. Roy 
 - Calcutta:  Fertiliser Association of India,  1980 
 - iii, 238 p.;  18 cm. 
<br/><br/><label>ISBN: </label> Rs. 12.50 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hydrogenion concentration--Congresses<br/>Acid soils--Congresses<br/>Soil acidity--Congresses
<br/><br/><label>Dewey Class. No.: </label>631.8