@misc{indiciaec03a57d1993b,
  title = {The Yakima Basalt and Ellensburg Formation of south-central Washington},
  author = {J.W. Bingham and Maurice J. Grolier},
  year = {1966},
  doi = {10.3133/b1224g},
  url = {https://pubs.usgs.gov/publication/b1224G},
  note = {Source identifier: b1224G}
}