@misc{indiciaee42e7492a2a5,
  title = {Variation and correlation in the crayfish with special reference to the influence of differentiation and homology of parts — Illustration, Page 9},
  year = {1907},
  url = {https://www.biodiversitylibrary.org/page/19633646},
  note = {Source identifier: page-19633646}
}