Usher M B Ed. <br/><br/>
Ecological stability 

 - London  Chapman and Hall         1974 
 - xii,196p.  cm. 
<br/><br/><label>Standard No.: </label>39897 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology
<br/><br/><label>Dewey Class. No.: </label>G:564, L4