Heimler, Charles H. <br/><br/>
Ecology and human influence 

 - Columbus  Charles E. Merrim Publishing  1977 
 - 107p. 
<br/><br/><label>ISBN: </label> USD 1.50 
<br/><br/><label>Source: </label> USD 1.50 
<br/><br/><label>Dewey Class. No.: </label>574.5 HEL