Kanwar, J.S. <br/><br/>
Phosphorus fixation in Indian soils  a review 
J.S. Kanwar, J.S. Grewal. 
 - 16th ed. 
 - New Delhi  ICAR  1990 
 - 59p., 24cm. 
<br/><br/><label>Dewey Class. No.: </label>631.85  / K12P