Kemmler, G. <br/><br/>
Fertilizer experiments ; the need for longterm trials 

 - Bern :  International Potash Institute,  1976 
 - 34 p.  ; gráfs. 
 - IPI. Research topics  ; 1 .
 - IPI. Research topics  ; 1 .
<br/><br/><label>LCCN: </label>27355 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertilizantes--Experimentación.