TY  - BOOK
T1  - Permian fauna at el antimonio, western sonora, Mexico
T2  - Smithsonian Miscellaneous Colections ;
A1  - Cooper, Arthur
A2  - Dunbar, Carl O.
PP  - Washington, D. C
PB  - Smithsonian Institution
YR  - 1953
UL  - http://vufind10-pruebas.sigbunlp.bibliotecas.unlp.edu.ar/Record/dun.45323
OP  - 106
ER  -