TY  - RPRT
TI  - Mapping Buried Stream Valleys in Philadelphia, Pennsylvania
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 2000
DO  - 10.3133/fs11700
UR  - https://pubs.usgs.gov/publication/fs11700
ID  - fs11700
ER  -