# H. D. Flap

> Ph.D.

**Wikidata**: [Q102261071](https://www.wikidata.org/wiki/Q102261071)  
**Source**: https://4ort.xyz/entity/h-d-flap


## References

1. BnF authorities
2. Integrated Authority File
3. Mathematics Genealogy Project
4. Persée
5. Virtual International Authority File
6. Catalogo of the National Library of India