@misc{indiciae10f1f20b19b6,
  title = {Digenetic trematodes: quinone tanning system in eggshells.},
  author = {P M Nollen},
  year = {1971},
  doi = {10.1016/0014-4894(71)90071-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/5003267/},
  note = {Source identifier: 5003267}
}