@misc{indiciae0b8934fe4dd4, title = {River basins of the United States: the Potomac}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1988}, doi = {10.3133/70039377}, url = {https://pubs.usgs.gov/publication/70039377}, note = {Source identifier: 70039377} }