Havlin (John L) etc <br/><br/>
Soil fertility and fertilizers 

 - 7 
 -  2005  Pearson Education, New Delhi 
 - 515  0  Paper 
<br/><br/> Paper Back 
<br/><br/><label>ISBN: </label>81-317-0816-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil Science
<br/><br/><label>Dewey Class. No.: </label>J:12  P5