Twenhofel, William H. <br/><br/>
Invertebrate paleontology / 
by William H. Twenhofel and Robert R. Shrock. 
 - New York ;  London :  McGraw-Hill,  1935. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Invertebrados<br/>Paleontología<br/>Zoología
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Texto