@misc{indiciaed062156cb103,
  title = {Reconnaissance of the upper Au Sable River a cold-water river in the north-central part of Michigan's southern peninsula},
  author = {G. E. Hendrickson and C. J. Doonan},
  year = {1974},
  doi = {10.3133/ha527},
  url = {https://pubs.usgs.gov/publication/ha527},
  note = {Source identifier: ha527}
}