Managing soil quality :  challenges in modern agriculture / 
edited by P. Schjønning, S. Elmholt, and B.T. Christensen 
 - Wallingford, Oxon ;  Cambridge, MA :  CABI Pub.,  c2004 
 - viii, 344 p. :  ill. ;  26 cm 
<br/><br/><label>ISBN: </label>9780851996714 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil management<br/>Soils--Quality