# Ludwik Fleck

> Polish physician (1896–1961)

**Wikidata**: [Q523087](https://www.wikidata.org/wiki/Q523087)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Ludwik_Fleck)  
**Source**: https://4ort.xyz/entity/ludwik-fleck


## References

1. Integrated Authority File
2. Czech National Authority Database
3. BnF authorities
4. [Source](http://czlonkowie.pan.pl/czlonkowie/sites/WynikiWyszukiwania.html?s=FLECK,%20Ludwik%20)
5. SNAC
6. Brockhaus Enzyklopädie
7. Internet Philosophy Ontology project
8. Freebase Data Dumps. 2013
9. Virtual International Authority File
10. DACS register
11. ADAGP directory
12. FactGrid
13. Sejm-Wielki.pl