# J. I. de Blas
**Wikidata**: [Q56000536](https://www.wikidata.org/wiki/Q56000536)  
**Source**: https://4ort.xyz/entity/j-i-de-blas


## References

1. Catalog of the German National Library
2. datos.bne.es
3. MAK
4. Faceted Application of Subject Terminology