@misc{indiciae3dde9eefaf87,
  title = {Eighteenth annual report of the United States Geological Survey to the Secretary of the Interior, 1896-1897: Part II - Papers chiefly of a theoretical nature},
  author = {M.W. Davis and R. T. Hill and T.W. Vaughan and W.H. Dall and I.C. Russell and G. O. Smith and J.E. Wolff and A. H. Brooks and W.S.T. Smith and N.S. Shaler and G. K. Gilbert},
  year = {1897},
  doi = {10.3133/ar18},
  url = {https://pubs.usgs.gov/publication/ar18},
  note = {Source identifier: ar18}
}