Soil organic matter in sustainable agriculture 
Edited by Fred Magdoff and Ray R. Weil 
 - London:  CRC Press,  2004. 
 - 389p. 
 - Advances in agroecology .
<br/><br/> PB 
<br/><br/><br/>Eng 
<br/><br/><label>ISBN: </label>9780367394233 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Humus<br/>Soil ecology<br/>Sustainable agriculture
<br/><br/><label>Dewey Class. No.: </label>631.417  / SOI