Biological Science / 
Keeton William L. ;Gould James et al. 
 - 5th ed.  vol. one 
 - New York  W,W, Norton & Company  1993 
 - xxi ,530 p.  col. , ill.  25 cm. 
<br/><br/><label>ISBN: </label>0-393-96224-5 
<br/><br/><label>LC Class. No.: </label>QH 308.2  / .K43  1993