@misc{indiciaea29543815f11,
  title = {Vitamin A and carotene contents of some wildlife foods},
  author = {Ralph B. Nestler and James V. Derby and J.B. DeWitt},
  year = {1949},
  doi = {10.2307/3795868},
  url = {https://pubs.usgs.gov/publication/5220341},
  note = {Source identifier: 5220341}
}