@misc{indiciae1c48974bcd43,
  title = {Muskrat investigations on the Blackwater National Wildlife Refuge, Maryland, 1941-1945},
  author = {Herbert L. Dozier and M.H. Markely and L. M. Llewellyn},
  year = {1948},
  doi = {10.2307/3796414},
  url = {https://pubs.usgs.gov/publication/5220673},
  note = {Source identifier: 5220673}
}