# Erik j. Knudtzon
**Wikidata**: [Q95298701](https://www.wikidata.org/wiki/Q95298701)  
**Source**: https://4ort.xyz/entity/erik-j-knudtzon


## References

1. Czech National Authority Database
2. IdRef
3. Catalog of the German National Library
4. [Source](https://library.aarome.org/cgi-bin/koha/opac-authoritiesdetail.pl?marc=1&authid=12452982)
5. Virtual International Authority File
6. NUKAT
7. Alvin
8. [Source](https://runeberg.org/vemarvem/skane48/0294.html)
9. [Source](https://runeberg.org/vemardet/1955/0527.html)
10. [Source](https://runeberg.org/vemardet/1957/0549.html)
11. [Source](https://runeberg.org/vemarvem/sthlm62/0730.html)
12. [Source](https://runeberg.org/vemardet/1963/0592.html)
13. [Source](https://runeberg.org/vemardet/1967/0505.html)
14. [Source](https://runeberg.org/vemardet/1969/0525.html)