Schrock, Robert, <br/><br/>
Principles of invertebrate paleontology. 

 - Second edition. 
 - 816 páginas :  ilustraciones. . 
 - International series in the earth sciences .
<br/><br/><label>Subjects--Topical Terms: </label><br/>INVERTEBRADOS FOSILES.<br/>PALEONTOLOGIA.
<br/><br/><label>Dewey Class. No.: </label>562