# Ueyama Masao

> Japanese writer and Esperantist

**Wikidata**: [Q3850653](https://www.wikidata.org/wiki/Q3850653)  
**Source**: https://4ort.xyz/entity/ueyama-masao


## References

1. Czech National Authority Database
2. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
3. [Source](http://literaturo.esperanto.net/autor/ueyama.html)