# Widmar Hader

> German composer

**Wikidata**: [Q1113870](https://www.wikidata.org/wiki/Q1113870)  
**Source**: https://4ort.xyz/entity/widmar-hader


## References

1. Integrated Authority File
2. Virtual International Authority File
3. [Source](https://www.mittelbayerische.de/kultur-nachrichten/widmar-hader-wollte-eine-bessere-welt-durch-die-musik-21853-art2183910.html)
4. Library of Congress Control Number
5. Bibliography of the History of the Czech Lands
6. [Regional Database of the Central Bohemian Research Library in Kladno](https://ipac.svkkl.cz/arl-kl/cs/detail-kl_us_auth-p0099030-Hader-Widmar-1941)