@misc{indiciaeb57a3348ead3,
  title = {Causes of reproductive failure in two family groups of wolves (Canis lupus)},
  author = {J.M. Packard and U.S. Seal and L.D. Mech and E.D. Plotka},
  year = {1985},
  url = {https://pubs.usgs.gov/publication/5222002},
  note = {Source identifier: 5222002}
}