Wells, Harrington . <br/><br/>
General Biology /  Textual Documents 
Harrington Wells and Patrick H. Wells. 
 - 1st ed. / 
 - New York :  McGraw - Hill book company ,  C1956. 
 - vii,520p. :  ill ;  23cm . 
<br/><br/>Index 
<br/><br/><label>Subjects--Index Terms: </label>Biology G-Geology 
<br/><br/><label>Dewey Class. No.: </label>570  / W 462 G