@misc{indiciae908b6195da7c,
  title = {Map showing availability of hydrologic data, Boulder-Fort Collins-Greeley area, Front Range Urban Corridor, Colorado},
  author = {E. R. Hampton and G. A. Clark and M. H. McNutt},
  year = {1974},
  doi = {10.3133/i855c},
  url = {https://pubs.usgs.gov/publication/i855C},
  note = {Source identifier: i855C}
}