@misc{indiciae85e0dd1ac62f,
  title = {Geologic map of the Chelan 30-minute by 60-minute quadrangle, Washington},
  author = {R. W. Tabor and V. A. Frizzell and J. T. Whetten and R. B. Waitt and D. A. Swanson and G. R. Byerly and D. B. Booth and M. J. Hetherington and R. E. Zartman},
  year = {1987},
  doi = {10.3133/i1661},
  url = {https://pubs.usgs.gov/publication/i1661},
  note = {Source identifier: i1661}
}