Constant, Kurt Michael <br/><br/>
World nitrogen survey 
by Kurt Michael Constant, William F. Sheldrick 
 - Washington, D.C.  IBRD  1992 
 - 190p. 
 - World bank technical paper number 174, Asia technical department series .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertilizers
<br/><br/><label>Dewey Class. No.: </label>Z212 C766