@misc{indiciaec6e1a9f516d4,
  title = {Pack size and wolf pup survival: their relationship under varying ecological conditions},
  author = {Fred H. Harrington and L. David Mech and Steven H. Fritts},
  year = {1983},
  doi = {10.1007/bf00295072},
  url = {https://pubs.usgs.gov/publication/5221853},
  note = {Source identifier: 5221853}
}