# Ueber die Bastarde der Veilchen-Arten

> publication (1882), doctoral thesis by Albert Bethke

**Wikidata**: [Q51393479](https://www.wikidata.org/wiki/Q51393479)  
**Source**: https://4ort.xyz/entity/ueber-die-bastarde-der-veilchen-arten


## References

1. Internet Archive
2. Source