Phosphate rock and phosphatic fertilizers in the world :  role of international aid. 

 - Paris :  OECD ,  1972 
 - 130p. :  ill. ;  25 cm. 
 - OECD technical papers .
<br/><br/><label>Subjects--Topical Terms: </label><br/>International trade<br/>Fertilizer industry<br/>Foreign assistance<br/>Fertilizers
<br/><br/><label>Dewey Class. No.: </label>631.8  / OECD-2