@misc{indiciaeb6bff5f0d607,
  title = {The Columbia River Basalt Group in the Spokane Quadrangle, Washington, Idaho, and Montana, with a section on petrography},
  author = {Allan Bingham Griggs and Donald A. Swanson},
  year = {1976},
  doi = {10.3133/b1413},
  url = {https://pubs.usgs.gov/publication/b1413},
  note = {Source identifier: b1413}
}