Worblaufen-Berne,Switzerland ,International, Potash Institute <br/><br/>
Fertilizser use and Protein production : Proceedings of the 11th colloquim of the IInternational Potash Insitute held in Rome - Bornholm / Denmark 1975 

 - 1st 
 -  1975 
<br/><br/><label>Dewey Class. No.: </label>631.8IPI