World and regional supply and demand balances for nitrogen, phosphate, and potash, 1990/91-1996/97 / 

 - Washington, D.C. :  World Bank (WB) ,  1992 
 - xiii, 38p. :  ill. ;  28 cm. 
 - World Bank technical paper,  no. 176 .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0821321633 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trade theory<br/>Foreign trade<br/>International trade
<br/><br/><label>Gov. Doc. Class. No.: </label>UN WB TP-176