TY  - RPRT
TI  - Average topography, isostatic residual gravity, and aeromagnetic maps of the Parkfield region, California
AU  - Robert W. Simpson
AU  - R.C. Jachens
AU  - Carl M. Wentworth
PY  - 1989
DO  - 10.3133/ofr8913
UR  - https://pubs.usgs.gov/publication/ofr8913
ID  - ofr8913
ER  -