@misc{indiciae6007f4a69b7a, title = {Quality of surface waters of the United States, 1969, Part 1, North Atlantic Slope basins}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1974}, doi = {10.3133/wsp2141}, url = {https://pubs.usgs.gov/publication/wsp2141}, note = {Source identifier: wsp2141} }