# Die Gefässkryptogamen der Schweiz.
**Wikidata**: [Q51481968](https://www.wikidata.org/wiki/Q51481968)  
**Source**: https://4ort.xyz/entity/die-gef-sskryptogamen-der-schweiz-


## References

1. Biodiversity Heritage Library
2. Internet Archive
3. Library of Congress Online Catalog