# Franciszek Ratajczak
**Wikidata**: [Q9262871](https://www.wikidata.org/wiki/Q9262871)  
**Source**: https://4ort.xyz/entity/franciszek-ratajczak


## References

1. [BnF authorities](https://catalogue.bnf.fr/ark:/12148/cb15918728v)
2. Integrated Authority File
3. general catalog of BnF
4. Virtual International Authority File
5. [BnF authorities](https://data.bnf.fr/ark:/12148/cb15918728v)
6. Internetowy Polski Słownik Biograficzny
7. Library of Congress Control Number
8. Sejm-Wielki.pl