@misc{indiciaef22c11173642,
  title = {Changes in chemical characteristics of water in selected wetlands in the Cottonwood Lake area, North Dakota, U.S.A., 1967-1989},
  author = {James W. LaBaugh and George A. Swanson},
  year = {1992},
  url = {https://pubs.usgs.gov/publication/70073658},
  note = {Source identifier: 70073658}
}