WELLSTEAD, Carl F. <br/><br/>
Taxonomic revision of the Lysorophia, permo-carboniferous lepospondyl amphibians / 
Carl F. Wellstead. 
 -- New York :   American Museum of Natural History,   1991 
 - 90 p.  il. -- 
 (Bulletin of the American Museum of Natural History  ; 209).
<br/><br/> En Theos 30/1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Anfibios
<br/><br/><label>Universal Decimal Class. No.: </label>597.6