TY  - RPRT
TI  - The Cambrian-Ordovician rocks of Sonora, Mexico, and southern Arizona, southwestern margin of North America (Laurentia)
AU  - William R. Page
AU  - Alta C. Harris
AU  - John E. Repetski
PY  - 2013
DO  - 10.1306/13331520m983515
UR  - https://pubs.usgs.gov/publication/70045425
ID  - 70045425
ER  -