Collins, Peter <br/><br/>
Fertilisers  

 - London:   Overseas Development Institute,   1963 
 - 68p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture 
<br/><br/><label>Subjects--Index Terms: </label>Economic Demonstration  
<br/><br/><label>Universal Decimal Class. No.: </label>631.8   / K3