Soil fertility t: theory and practice 
compiled and edited by J.S. Kanwar 
 - New Delhi  Indian Council of Agricultural Research  1976 
 - xi, 533p. ; 26cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil fertility <br/>Plant nutrient
<br/><br/><label>Dewey Class. No.: </label>631.42  / SOI