@misc{indiciaed151b4bc6e8e,
  title = {Preliminary geologic map of the Clear Lake NE quadrangle, Skagit County, Washington},
  author = {John T. Whetten and D. P. Dethier and Paul R. Carroll},
  year = {1979},
  doi = {10.3133/ofr791468},
  url = {https://pubs.usgs.gov/publication/ofr791468},
  note = {Source identifier: ofr791468}
}