@misc{indiciae174d2f62ef19, title = {Water resources data Maryland and Delaware, water year 1971, Part 2. Water quality records}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1974}, doi = {10.3133/wdrmdde712}, url = {https://pubs.usgs.gov/publication/wdrMDDE712}, note = {Source identifier: wdrMDDE712} }