TY  - RPRT
TI  - 1:100,000-scale topographic contours derived from digital elevation models, San Francisco Bay region, California: a digital database
AU  - Heather M. Wright
AU  - Carl M. Wentworth
PY  - 2001
DO  - 10.3133/ofr01101
UR  - https://pubs.usgs.gov/publication/ofr01101
ID  - ofr01101
ER  -