Sheldrick, William F. <br/><br/>
World potash survey 
by William F. Sheldrick and Harald Stier 
 - Washington, D.C.  IBRD  1978 
 - 66p. 
 - World Bank Staff Working Paper No.293 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertilisers
<br/><br/><label>Dewey Class. No.: </label>Z212 In8