Transition from extensive to intensive agriculture with fertilizers :  proceedings of the VIIth colloquium of the International Potash Institute held in Israel 1969 

 - Berne :  International Potash Institute,  1969 
 - 282 pages :  illustration ;  23 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertilizers<br/>Congresses
<br/><br/><label>LC Class. No.: </label>HD1405 T73