# Efrydiau athronyddol

> periodical

**Wikidata**: [Q5347620](https://www.wikidata.org/wiki/Q5347620)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Efrydiau_Athronyddol)  
**Source**: https://4ort.xyz/entity/efrydiau-athronyddol


## References

1. [National Library of Wales Catalogue](http://id.library.wales/99281993402419)
2. [SUNCAT](https://suncat.ac.uk/serials/SCID00020386664)
3. [Google APIs](https://content-books.googleapis.com/books/v1/volumes/j_HZYgEACAAJ)
4. ISSN Portal
5. Welsh Journals
6. OpenAlex