# Leon Drewnicki
**Wikidata**: [Q99656139](https://www.wikidata.org/wiki/Q99656139)  
**Source**: https://4ort.xyz/entity/leon-drewnicki


## References

1. Catalog of the German National Library
2. NUKAT
3. MAK
4. CERL Thesaurus
5. [Source](https://wikidata-externalid-url.toolforge.org/?p=1207&url_prefix=http://nukat.edu.pl/aut/&id=n2004077852)
6. [Source](http://thesaurus.cerl.org/record/cnp01438332)
7. [Source](https://wikidata-externalid-url.toolforge.org/?p=8034&url_prefix=https://opac.vatlib.it/auth/detail/&id=495%2F115428)