11 papers read at the Annual Meeting of the Board of Technical Advis ers of the International Potash Institute (4 sessions) London, 1956. 

 - Berne :  International Potash Institute ,  1956. 
 - xxi, 274 p. :  ill. ;  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Potassium fertiliser.
<br/><br/><label>Dewey Class. No.: </label>631.83