TY  - RPRT
TI  - Geohydrologic reconnaissance of the upper Potomac River basin
AU  - Frank W. Trainer
AU  - Frank A. Watkins
PY  - 1975
DO  - 10.3133/wsp2035
UR  - https://pubs.usgs.gov/publication/wsp2035
ID  - wsp2035
ER  -