@misc{indiciaeb818272c1835,
  title = {Preliminary free-air gravity map, Norton Basin, Alaska},
  author = {Michael A. Fisher and P.H. McClellan and M.L. Holmes and J.R. Childs},
  year = {1980},
  doi = {10.3133/ofr801068},
  url = {https://pubs.usgs.gov/publication/ofr801068},
  note = {Source identifier: ofr801068}
}