Havlin John L <br/><br/>
Soil fertility and fertilizers : an introduction to nutrient management 

 - 7th Ed. 
 - New Delhi  Pearson  2001 
 - 515 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Civil Engineering
<br/><br/><label>Dewey Class. No.: </label>624  / HA-S