TY  - BOOK
AU  - Arellano,A.R.V.
AU  - Arthur Cooper,G.
AU  - Harlan Johnson,J.
TI  - Cambrian stratigraphy and paleontology near caborca, northwestern sonora, México
PY  - 1952///
CY  - Washington, D. C : 
PB  - Smithsonian Institution, 
N1  - Smithsonian Miscellaneous Collections, vol. 119, Nº 1. Charles D. And Mary Vaux Walcott Research Fund
ER  -