@misc{indiciae4b531676d1ae,
  title = {Embryotoxic effects of crude oil in mallard ducks and chicks},
  author = {David J. Hoffman},
  year = {1978},
  doi = {10.1016/0041-008x(78)90149-7},
  url = {https://pubs.usgs.gov/publication/5221433},
  note = {Source identifier: 5221433}
}