@misc{indiciaefb720bc401de,
  title = {Bed topography inferred from airborne radio-echo sounding of Columbia Glacier, Alaska},
  author = {C. S. Brown and Lowell A. Rasmussen and M. F. Meier},
  year = {1986},
  doi = {10.3133/pp1258g},
  url = {https://pubs.usgs.gov/publication/pp1258G},
  note = {Source identifier: pp1258G}
}