Shmalgauzen, I. I. <br/><br/>
The origin of terrestrial vertebrates / 
I. J. Schmalhausen ; translated from the Russian by Leon Kelso ; edited by Keith Stewart Thomson, with a pref. to the English ed. by Carl Gans. 
 - New York :  Academic Press,  1968. 
 - xviii ,  314p. :  ill . ;  25 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0126257507 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Vertebrates.<br/>Paleontology.