# SS. Cyril and Methodius National Library

> national library of Bulgaria

**Wikidata**: [Q631641](https://www.wikidata.org/wiki/Q631641)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/SS._Cyril_and_Methodius_National_Library)  
**Source**: https://4ort.xyz/entity/ss-cyril-and-methodius-national-library


## References

1. COURAGE Knowledge Graph
2. BnF authorities
3. [Source](https://web.archive.org/web/20221226144622/https://www.cenl.org/member-libraries/)
4. [Source](https://web.archive.org/web/20230803111744/https://cdn.ifla.org/wp-content/uploads/ifla-members-and-association-affiliates_2023-07-21.pdf)
5. Freebase Data Dumps. 2013
6. [Open GLAM Survey, version of 31 October 2019](https://archive.org/details/OpenGLAM_Survey_20191031)
7. [Open GLAM Survey, version of 30 April 2020](https://archive.org/details/OpenGLAM_Survey_20200430)
8. [Open GLAM Survey, version of 3 August 2021](https://archive.org/details/OpenGLAM_Survey_20210803)
9. [Open GLAM Survey, version of 17 February 2022](https://archive.org/details/OpenGLAM_Survey_20220217)
10. [Source](https://docs.google.com/spreadsheets/d/1WPS-KJptUJ-o8SXtg00llcxq0IKJu8eO6Ege_GrLaNc)
11. [Open GLAM Survey, version of 27 June 2023](https://archive.org/details/open-glam-survey-backup-20230627)
12. [Open GLAM Survey, version of 16 May 2024](https://archive.org/details/open-glam-survey-backup-20240516)
13. [Source](https://www.pope.tech/)
14. [Source](https://www.w3.org/TR/WCAG22)
15. [Source](https://wave.webaim.org/)
16. [Source](https://doi.org/10.17632/2rpn9vhwct.1)
17. Aligned ISNI and Ringgold identifiers for institutions
18. [Open GLAM Survey](https://docs.google.com/spreadsheets/d/1WPS-KJptUJ-o8SXtg00llcxq0IKJu8eO6Ege_GrLaNc)
19. National Library of Israel Names and Subjects Authority File