Johnson, Clifford <br/><br/>
Introduction to Natural Selection 
/ by Clifford Johnson 
 - Baltimore, Maryland;  University Park Press:  1976. 
 - viii, 213p. 
<br/><br/><label>ISBN: </label>0839109369 
<br/><br/><label>Dewey Class. No.: </label>575.0162  / JOH/I