TY  - RPRT
TI  - Preliminary map of historic margins of marshland, San Francisco Bay, California
AU  - D.R. Nichols
AU  - N. A. Wright
PY  - 1971
DO  - 10.3133/ofr71216
UR  - https://pubs.usgs.gov/publication/ofr71216
ID  - ofr71216
ER  -