Phosphate rock and phosphate fertilizer in the world: role of international aid. 

 - Paris :  OECD,  1972. 
<br/><br/> The study analyses the world phosphate rock and fertilizer situation, with special reference to the position and role of the less developed countries in the field of influence of international aid, (the English text is the second half of the book). 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Phosphates.<br/>Chemical Fertilizer -- Fertilizers -- Agriculture.--Chemical Fertilizer -- Fertilizers -- Agriculture.--Chemical Fertilizer -- Fertilizers -- Agriculture.