TY  - RPRT
TI  - Preliminary simple Bouguer gravity map of northeastern Sonora, northwestern Chihuahua, and southeastern Arizona
AU  - Consejo de Recursos Minerales (Mexico)
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1977
DO  - 10.3133/ofr77473
UR  - https://pubs.usgs.gov/publication/ofr77473
ID  - ofr77473
ER  -