@misc{indiciaefe5465eec8bd,
  title = {Pollen and spore morphology/plant taxonomy; gymnospermae, pteriodophyta, bryophyta (Illustrations) — Illustration, BHL page 4725310},
  year = {1957},
  url = {https://www.biodiversitylibrary.org/page/4725310},
  note = {Source identifier: page-4725310}
}