# Josef Doppler
**Wikidata**: [Q107576551](https://www.wikidata.org/wiki/Q107576551)  
**Source**: https://4ort.xyz/entity/josef-doppler


## References

1. [Database of the Military Historical Archive](http://www.vuapraha.cz/soldier/14957211)
2. Students of the Universities of Prague 1882–1945
3. Database of members of the Czechoslovak Republic of military units abroad for the World War II