Gregory, William king <br/><br/>
Evolution emerging, Vol.1 

 - 
 - Macmillan Co., New York  1951 
 - 736 
 - .
<br/><br/>  
<br/><br/><label>ISBN: </label>  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animal evolution
<br/><br/><label>Dewey Class. No.: </label>591.38  GRE-E.1