@misc{indiciae8b780ce4d61f,
  title = {Laboratory methods},
  author = {F.G. Ethridge and W.R. Almon and M.P. Cone and D.G. Kersey and H.A. Ohen and W.A. Nagel and K.A. Byerly and Jim Funk and C.L. Vayra and J.G. Kaldi and R.M. Sneider and J.T. Hawkins and R. W. Scott and D.W. Houseknecht and J.B. Thomas and P.C. Henshaw and R.L. Kaufman and L.W. Slentz and P.A. Dickey and Dare Keelan and J.O. Amaefule},
  year = {1992},
  url = {https://pubs.usgs.gov/publication/70186543},
  note = {Source identifier: 70186543}
}