# Friedrich Helfferich

> German-American chemical engineer and university teacher (1922-2005)

**Wikidata**: [Q112561930](https://www.wikidata.org/wiki/Q112561930)  
**Source**: https://4ort.xyz/entity/friedrich-helfferich-q112561930


## References

1. Czech National Authority Database
2. [Source](https://www.yumpu.com/en/document/read/3813131/professor-fred-helfferich-department-of-chemical-engineering-)
3. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
4. Catalogo of the National Library of India