S.V. Govinda Rajan <br/><br/>
Soil and crop productivity : A handbook for the use of workers in agricultural extecnsion, vocational agriculture and farmers in 

 - New York  Asia Publishing House  1971 
 - 313p 
<br/><br/><br/>ENGLISH 
<br/><br/><label>ISBN: </label>0-210-27100-0 
<br/><br/><label>Dewey Class. No.: </label>631.4  / GOV