# Jan Marcinkiewicz
**Wikidata**: [Q11718333](https://www.wikidata.org/wiki/Q11718333)  
**Source**: https://4ort.xyz/entity/jan-marcinkiewicz


## References

1. Virtual International Authority File
2. [Source](https://www.iccf.com/userfiles/files/2012%20GM.pdf)
3. [Source](https://www.iccf.com/userfiles/files/2012%20IM(1).pdf)
4. [Source](https://www.iccf.com/userfiles/files/2012%20SIM.pdf)