Shrock, Robert R. <br/><br/>
Principles of Invertebrate Paleontology 

 - Delhi  CBS Pub. & Distributors  1953 
 - xx,810p.  21.5cm. 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Principles of Invertebrate Paleontology
<br/><br/><label>Dewey Class. No.: </label>562  / S41P