Havlin, John L.  <br/><br/>
Soil fertility and fertilizers :  an introduction to nutrient management / 
John L. Havlin, Samuel Tisdale, Werner L. Nelson and James D. Beaton 
 - 8th ed. 
 - vii, 516 p. :  ill., maps ; 
<br/><br/> Includes bibliographical references and index. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9780135033739 013503373X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertilizers.<br/>Soil fertility.<br/>Crops--Nutrition.
<br/><br/><label>LC Class. No.: </label>S 633 HAV 2013