# Marek Pietrzak

> Polish Esperantist

**Wikidata**: [Q12352288](https://www.wikidata.org/wiki/Q12352288)  
**Source**: https://4ort.xyz/entity/marek-pietrzak


## References

1. [Source](https://dlibra.kul.pl/dlibra/publication/53920/edition/46111/content)