Batten, Roger Lyman <br/><br/>
Permian gastropods and chitons from perak, Malaysia : part. 1, Chitons, Bellerophontids, Euomphalids and Pleurotomarians / 
Roger L. Batten. 
 -- New Yok :   [s.n.],   1972 
 - 44p. -- 
 (Bulletin of the American Museum of Natural History  ;  147, 1).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gastrópodos
<br/><br/><label>Universal Decimal Class. No.: </label>594.3