@misc{indiciae469afc2faaae,
  title = {Preliminary Geologic Map of the Lake Mead 30' X 60' Quadrangle, Clark County, Nevada, and Mohave County, Arizona},
  author = {L. S. Beard and R.E. Anderson and D.L. Block and R. G. Bohannon and R.J. Brady and S.B. Castor and E. M. Duebendorfer and J. E. Faulds and T.J. Felger and K. A. Howard and M. A. Kuntz and V. S. Williams},
  year = {2007},
  doi = {10.3133/ofr20071010},
  url = {https://pubs.usgs.gov/publication/ofr20071010},
  note = {Source identifier: ofr20071010}
}