# Placidus Lang
**Wikidata**: [Q110234138](https://www.wikidata.org/wiki/Q110234138)  
**Source**: https://4ort.xyz/entity/placidus-lang


## References

1. [Source](https://archive.org/details/macmillanencyclo006003mbp/page/1013)
2. Integrated Authority File
3. [Source](https://www.digitale-sammlungen.de/de/view/bsb10503800?page=78)