TY  - BOOK
AU  - Gehrig,John Leonard
TI  - Middle Pennsylvanian brachiopods from the Mud Springs Mountains and Derry Hills, New Mexico
AV  - QE796 .G4
U1  - 564.80978967 
PY  - 1958///
CY  - Socorro
PB  - State Bureau of Mines and Mineral Resources, New Mexico Institute of Mining and Technology
KW  - Brachiopoda, Fossil
KW  - Paleontology
KW  - Pennsylvanian
KW  - New Mexico
KW  - Sierra County
N1  - Bibliography: p.22
ER  -