Biology today and tomorrow/ 
Ebert, James D. 
 -  Holt, Rinehart and Winston, Inc.  1973 
 - 798 pages. 
<br/><br/>
<br/><br/><label>ISBN: </label>0-03-084863-6 
<br/><br/><label>Dewey Class. No.: </label>574 B52 1973