# John M. Fein
**Wikidata**: [Q55943103](https://www.wikidata.org/wiki/Q55943103)  
**Source**: https://4ort.xyz/entity/john-m-fein


## References

1. MAK
2. datos.bne.es
3. Faceted Application of Subject Terminology
4. National Library of Israel Names and Subjects Authority File
5. Catalogo of the National Library of India