Hanson, Earl D. <br/><br/>
The origin and early evolution of animals 

 - Middletown  Wesleyan University Press  1977 
 - ix, 690p.  26cm. 
<br/><br/><label>ISBN: </label>0-273-01132-4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Evolution
<br/><br/><label>LC Class. No.: </label>QH366.2.H32