Biological indicators of soil health / 
edited by C. Pankhurst, B. Doube and V. Gupta. 
 - Wallingford, Oxon, UK :  CAB International,  1997. 
 - 451 p.  :  ill. ; 23 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0851991580  RM423.15 
<br/><br/><label>LCCN: </label>97-013061 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil biology.<br/>Indicators (Biology)