Fertilizers:   Annual review of world production, consumption and trade  
/ Food and agriculture organization of the United Nations  
 - Rome:   Food and agriculture organization of the United Nations,   1962 
 - viii, 173p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Subjects--Index Terms: </label>Potash  Nitrogen 
<br/><br/><label>Universal Decimal Class. No.: </label>631.8:31(047.1)(100)  / K2