@misc{indiciae3c7296eb7c2b,
  title = {Embryotoxic effects of crude oil containing nickel and vanadium in mallards},
  author = {D. J. Hoffman},
  year = {1979},
  doi = {10.1007/bf01769942},
  url = {https://pubs.usgs.gov/publication/5221468},
  note = {Source identifier: 5221468}
}