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

 - 3rd edition, revised edition. 
 - Rome :  Food & Agriculture Organization of the United Nations,  c1978. 
 - x, 51 pages :  Illustrations ;  23 cm. 
 - FAO land and water development series ;  no.8 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertilizers and manures.