@misc{indiciaeae977e7716be,
  title = {Water resources data Maryland and Delaware, water year 1969, Part 2. Water quality records},
  author = {U.S. Geological Survey},
  year = {1972},
  doi = {10.3133/wdrmdde692},
  url = {https://pubs.usgs.gov/publication/wdrMDDE692},
  note = {Source identifier: wdrMDDE692}
}