Clarke, George L. . <br/><br/>
Elements of Ecology /  Textual Documents 
George L. Clarke. 
 - 1st ed. / 
 - New York :  John Wiley & Sons ,  C1954. 
 - xiv,534p. :  ill ;  23cm . 
<br/><br/>Index 
<br/><br/><label>Subjects--Index Terms: </label>Biology Ecology G-Biology 
<br/><br/><label>Dewey Class. No.: </label>575.3  / C 552 El