Methods for studying the ecology of soil micro-organisms / 
edited by D. Parkinson, T. R. G. Gray and S.T. Williams. 
 - London :  International Biological Programme,  1971. 
 - xi, 116 p. :  ill. ;  21 cm. 
 - IBP handbook ;  19 .
<br/><br/> Distributed in the U.S.A. by F.A. Davis Co., Philadelphia. 
<br/><br/>Bibliography : p. 110-116. 
<br/><br/><label>ISBN: </label>0632082607 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil microbiology--Technique.<br/>Soil ecology--Technique.