# John C. Geyer

> American professor of sanitary engineering and water resources

**Wikidata**: [Q98908273](https://www.wikidata.org/wiki/Q98908273)  
**Source**: https://4ort.xyz/entity/john-c-geyer


## References

1. Integrated Authority File
2. YouTube
3. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
4. Faceted Application of Subject Terminology
5. Virtual International Authority File
6. CiNii Research
7. [Source](https://www.nae.edu/29323/wd)
8. LIBRIS. 2018
9. Catalogo of the National Library of India