Soil fertility and fertilizers :  an introduction to nutrient management / 
John L. Havlin ... [et al.]. 
 - 7th ed. 
 - Upper Saddle River, N.J. :  Pearson Prentice Hall,  c2005. 
 - xi, 515 p. :  ill. ;  27 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0130278246 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertilizers.<br/>Soil fertility.<br/>Crops--Nutrition.
<br/><br/><label>Dewey Class. No.: </label>631.8 SOI