TY  - RPRT
TI  - Principal facts for more than 700 new gravity stations in the San Francisco North and San Francisco South quadrangles, California
AU  - C. W. Roberts
PY  - 1991
DO  - 10.3133/ofr91103
UR  - https://pubs.usgs.gov/publication/ofr91103
ID  - ofr91103
ER  -