Porter, Kenneth R. <br/><br/>
Herpetology / 
by Kenneth R. Porter. 
 - Philadelphia :  Saunders,  1972. 
 - xi, 524 p. :  ill. ;  27 cm. 
<br/><br/>Includes bibliographies and indexes 
<br/><br/><label>ISBN: </label>0721672957 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Herpetology.