# Styfmem Ierde

> book by Theun de Vries (1936)

**Wikidata**: [Q18093529](https://www.wikidata.org/wiki/Q18093529)  
**Source**: https://4ort.xyz/entity/styfmem-ierde


## References

1. [KB catalogue](https://resolver.kb.nl/resolve?urn=PPN:832133442)
2. [data.bibliotheken.nl](http://data.bibliotheken.nl/doc/nbt/p832133442)
3. Delpher
4. KB catalogue
5. data.bibliotheken.nl