Hanson, Earl D. <br/><br/>
The origin and early evolution of animals / 
by Earl D. Hanson. 
 - 1st ed. 
 - Middletown, CT :  Wesleyan University Press,  c1977. 
<br/><br/> Includes indexes. 
<br/><br/>Bibliography: p. 594-637. 
<br/><br/><label>ISBN: </label>  
<br/><br/><label>LCCN: </label>76041480 //r91 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Evolution (Biology)
<br/><br/><label>LC Class. No.: </label>QH366.2  / .H37 
<br/><br/><label>Dewey Class. No.: </label>591.3/8