Subba Rao, N. S.,  <br/><br/>
Biofertilizers in agriculture / 
N. S. Subba Rao 
 - Second edition 
 - Rotterdam :  A. A. Balkema,  1992 
 - ix, 208 pages :  illustrations ;  22 cm 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9061914051 (paperback) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biofertilizers --Organic fertilizers and manures<br/>Biofertilizers --Fertilizers and improvement of the soil
<br/><br/><label>LC Class. No.: </label>S654.5 S83