Havlin, J.L. <br/><br/>
Soil Fertility and Fertilizers,7/ed 
By J. L. Havlin 
 - 7th 
 - New Delhi  PHI.Newdehli  2010 
 - 515 
<br/><br/> Engineering 
<br/><br/><label>ISBN: </label>978-81-203-301-77 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Civil