@misc{indiciae5e786043e537,
  title = {Urine of the northern fur seal (Callorhinus ursinus): analyses of 11 pelagic samples},
  author = {M.C. Keyes and E.J. Barron and A. J. Ross},
  year = {1971},
  url = {https://pubs.usgs.gov/publication/70182322},
  note = {Source identifier: 70182322}
}