TY  - BOOK
AU  - Case EC
AU  - Mehl MG
AU  - Williston SW
TI  - Permo-carboniferous vertebrates from New Maxico
U1  - 560.172(72) 
PY  - 1913///
CY  - Washington
PB  - Carnegie Institute
KW  - Paleontology
KW  - Paleozoic paleontology
KW  - Stratigraphic
ER  -