Harver, Ethel Browne <br/><br/>
The American Arbacia and others sea urchins  Ethel Browne Harver. 

 - Princetion  Princetion University Press  1956 
 - xiv, 298p.: ill. 24cm. 
<br/><br/><label>Dewey Class. No.: </label>593.953  / H39A