Fertilizers and their use :  a pocket guide for extension officers. 

 - 3rd. ed. rev. 
 - Rome :  Food and Agriculture Organization of the United Nations :  International Fertilizer Industry Association,  1986. 
 - x, 51 p. :  ill. ;  15 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>9251007063 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertilizers--Handbooks, manuals, etc.
<br/><br/><label>Dewey Class. No.: </label>631.33  / FAF 1986