# Dr. Ed. Grégr a syn

> Czech publishing house

**Wikidata**: [Q28842749](https://www.wikidata.org/wiki/Q28842749)  
**Source**: https://4ort.xyz/entity/dr-ed-gr-gr-a-syn


## References

1. Pozdrav ze Sokolského lazaretu
2. Czech National Authority Database
3. Bibliography of the History of the Czech Lands
4. Provenio