Hauser, G.F <br/><br/>
The calibration of soil tests for fertilizer recommendations 

 - Rome  FAO  1973 
 - vii, 71p.  Illustration 
 - FAO soils bulletin .
<br/><br/><label>ISBN: </label>9251002584 
<br/><br/><label>Dewey Class. No.: </label>631.4  / HAU