@misc{indiciaee6ace70ecd7b,
  title = {Data from ground magnetic survey of the Ralston Dike, Jefferson County, Colorado},
  author = {Wilfred P. Hasbrouck and M.L. Botsford and W.P. Jennings},
  year = {1975},
  doi = {10.3133/ofr7597},
  url = {https://pubs.usgs.gov/publication/ofr7597},
  note = {Source identifier: ofr7597}
}