Geus, Jan G De <br/><br/>
Fertilizer guide for the tropics and subtropics  
/ Centre d'Etude de I'Azote 
 - Zurich:   Centre d'Etude de I'Azote,   1973 
 - 775p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Subjects--Index Terms: </label>Fertilizers guide 
<br/><br/><label>Universal Decimal Class. No.: </label>R 631.8(026)(213)   / L3