# Herbert Langfeld

> American psychologist (1879-1958)

**Wikidata**: [Q18631891](https://www.wikidata.org/wiki/Q18631891)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Herbert_Langfeld)  
**Source**: https://4ort.xyz/entity/herbert-langfeld


## References

1. [Princeton Alumni Weekly](https://books.google.com/books?id=fhJbAAAAYAAJ&pg=RA12-PP1)
2. [Newsday](https://www.newspapers.com/article/newsday-nassau-edition-dr-herbert-sid/124096682/)
3. [Source](https://www.apa.org/about/governance/president/former-presidents)
4. Mathematics Genealogy Project
5. Find a Grave
6. [Source](http://viaf.org/viaf/data/viaf-20170101-links.txt.gz)
7. Virtual International Authority File
8. Faceted Application of Subject Terminology
9. www.pas.va
10. Catalogo of the National Library of India