FAO OF THE UNITED NATIONS <br/><br/>
Soil and Plant Testing and analysis: report of an expert consulation held in Rom 

 - Rome  Food and Agriculture Organiza  tion of the1980 
 - (iv),247p. 
<br/><br/><label>ISBN: </label>9251009619 
<br/><br/><label>Dewey Class. No.: </label>631.46