Richards, B. N. <br/><br/>
Introduction to the soil ecosystem 

 - New York   : Longman;  1974 
 - x,266p.   : ill.   ; 22cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil ecology
<br/><br/><label>LC Class. No.: </label>QH541.5.S6R52