TY  - RPRT
TI  - Stratigraphic nomenclature of Cambrian and Lower Ordovician rocks of easternmost southern Arizona and adjacent westernmost New Mexico
AU  - Philip Thayer Hayes
PY  - 1972
DO  - 10.3133/b1372b
UR  - https://pubs.usgs.gov/publication/b1372B
ID  - b1372B
ER  -