Potassium in soil  proceedings of the 9th colloquium of the International Potash Institute held in Landshut/Federal Republic of Germany 

 - [Berne]  1972 
 - 220 p.  illus  23 cm. 
<br/><br/> Opening and closing remarks in French  On spine: 9th Colloquium International Potash Institute 1972 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soils--Potassium content
<br/><br/><label>Dewey Class. No.: </label>631.4  / 16