Fertilizer yearbook 

 - United  Nations FAO        1988 
 - xxxi; 12p.  cm. 
 - "FAO Statistics series, no.89" .
<br/><br/><label>Standard No.: </label>169359 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Dewey Class. No.: </label>"X9 (J):24.1 N45 - N88, M8.38/UN"