# Karl Joseph Petrick

> researcher

**Wikidata**: [Q57624304](https://www.wikidata.org/wiki/Q57624304)  
**Source**: https://4ort.xyz/entity/karl-joseph-petrick


## References

1. [Source](https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.268467)
2. [E-Theses Online Service](https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.268467)
3. Virtual International Authority File
4. CiNii Research
5. Czech National Authority Database
6. Catalogo of the National Library of India