TY  - RPRT
TI  - Slope maps of the San Francisco Bay region, California: A digital database
AU  - Scott E. Graham
AU  - Richard J. Pike
PY  - 1998
DO  - 10.3133/ofr98766
UR  - https://pubs.usgs.gov/publication/ofr98766
ID  - ofr98766
ER  -