Chemistry of the soil 

 - 2nd  
 - New York:   Reinhold Publishing Corporation,   1964 
 - xxii, 515p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture 
<br/><br/><label>Subjects--Index Terms: </label>Acid soil Nitrogen  
<br/><br/><label>Universal Decimal Class. No.: </label>631.4  / K4