@misc{indiciae62f9fe733510,
  title = {Correspondence : Heiden (Friedrich) and Engelmann (George), 1880-1881 — Illustration, Sep 19 / 1881 [1] transcription},
  year = {1880},
  url = {https://www.biodiversitylibrary.org/page/43490424},
  note = {Source identifier: page-43490424}
}