@misc{indiciaee644c044402e,
  title = {Reproduction and health of mallards fed endrin},
  author = {J. W. Spann and G. H. Heinz and C.S. Hulse},
  year = {1986},
  doi = {10.1002/etc.5620050806},
  url = {https://pubs.usgs.gov/publication/5222093},
  note = {Source identifier: 5222093}
}