Annual fertilizer review  
/FAO 
 - Rome:   FAO,   1972 
 - xviii, 189p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>agriculture
<br/><br/><label>Subjects--Index Terms: </label>Nitrogenous fertilizers Consumption ratio 
<br/><br/><label>Universal Decimal Class. No.: </label>631.8(048.1)   / L3