The review of fertilizer year 1989 

 - Colombo  Ministry of agricultural development & research 
 - 68 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>AGRICULTURE<br/>BOOK BOX B1461<br/>REVIEW
<br/><br/><label>Dewey Class. No.: </label>B1461  / LDC