# Jan J. Langner
**Wikidata**: [Q94641510](https://www.wikidata.org/wiki/Q94641510)  
**Source**: https://4ort.xyz/entity/jan-j-langner


## References

1. Czech National Authority Database
2. [regional database of the  Research Library in Hradec Králové](https://www.svkhk.cz/tools/vyroci.asp?zobr=fulllist)
3. [Collection of Registry Books at Prague City Archives](http://katalog.ahmp.cz/pragapublica/permalink?xid=E1D35502B7FC41369EA6F8B95BE9409A&scan=121#scan121)
4. [Collection of Registry Books at Prague City Archives](http://katalog.ahmp.cz/pragapublica/permalink?xid=FE52844376954BC3AA2DCAEC84CC44D4&scan=44#scan44)
5. Virtual International Authority File
6. Faceted Application of Subject Terminology
7. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
8. [regional database of the Municipal Library of Hradec Kralove](https://kmhk.tritius.cz/authority/2210144)
9. Provenio
10. Bibliography of the History of the Czech Lands