PAUL, E A. <br/><br/>
Soil Organic Matter in Temperate Agroecosystems. 

 - Boca Raton.  CRC Press.  1997 
 - 414p. 
<br/><br/><label>ISBN: </label>0 8493 2802 0 
<br/><br/><label>Dewey Class. No.: </label>631.47097