Penn, I. E. <br/><br/>
The Middle Jurassic (mainly Bathonian) of Cardigan Bay and its palaeogeographical significance / 
I. E. Penn and C. D. R. Evans. 
 - London:   Her Majesty's Stationery Office,   1976.  
 - iv, 6 p. :  maps ;  30 cm. 
 - Institute of Geological Sciences : Natural Environment Research Council. 76/6 .
<br/><br/>Includes bibliographical references (p. 4, 6). 
<br/><br/><label>ISBN: </label>0118812416 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Jurassic period--Paleontology
<br/><br/><label>Dewey Class. No.: </label>560.1766