@misc{indiciae04089b7d9475,
  title = {Geology and coal resources of the Cumberland, Hobart, and Maple Valley quadrangles, King County, Washington},
  author = {James David Vine},
  year = {1969},
  doi = {10.3133/pp624},
  url = {https://pubs.usgs.gov/publication/pp624},
  note = {Source identifier: pp624}
}