Potassium, potasio, kalium symposium :  papers read at the congres s of the International Potash Institute. 

 - v. :  ill. ,  23 cm. 
<br/><br/> English, French, German, or Spanish with summaries in all 4 language s. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Potassium--Societies, etc.
<br/><br/><label>Dewey Class. No.: </label>631.83082