Fertilizers and their use  a pocket guide for extension officers 

 - 2nd 
 - FAO  Rome  1970 
 - x,54 
 - Nutrients balance Conversion factors 
<br/><br/><label>Nat. Bib. No.: </label>1030 
<br/><br/><label>Nat. Bib. Agency Control No.: </label>631.8FER 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Universal Decimal Class. No.: </label>631.8