TY  - RPRT
TI  - Bouguer gravity map of parts of Maricopa, Pima, Pinal, and Yuma Counties, Arizona
AU  - D. L. Peterson
PY  - 1968
DO  - 10.3133/gp615
UR  - https://pubs.usgs.gov/publication/gp615
ID  - gp615
ER  -