Middle Pennsylvanian brachiopods from the Mud Springs Mountains and Derry Hills, New Mexico.

Bibliographic Details
Main Author:	Gehrig, John Leonard
Format:	Book
Language:	English
Published:	Socorro : State Bureau of Mines and Mineral Resources, New Mexico Institute of Mining and Technology, 1958.
Series:	Memoir (New Mexico. Bureau of Mines and Mineral Resources) ; 3.
Subjects:	Brachiopoda, Fossil. Paleontology > Pennsylvanian. Paleontology > New Mexico > Sierra County.

Description
Physical Description:	24 pages : 6 plates, maps.
Bibliography:	Bibliography: page 22.