Tisdale, Samuel L. <br/><br/>
Soil fertility and fertilizers :  an introduction of nutrient management / 
Samuel L. Tisdale, John L. Havlin, et.al. 
 - 6th ed. 
 - Upper Saddle River, NJ :  Prentice Hall,   c1999. 
 - x, 499 p. :  ill. ;  25 cm. 
<br/><br/>Recommended text : *AG409/AGP33 
<br/><br/><label>ISBN: </label>9780136268062 
<br/><br/><label>Dewey Class. No.: </label>631.422  / S683