# Wer ist wer in der Philatelie? (3 ed.)

> German-language biographical encyclopaedia of mostly German philatelists, stamp dealers, postal historians by Wolfgang Maassen, 3rd edition in 6 volumes from 2011 to 2022

**Wikidata**: [Q127193929](https://www.wikidata.org/wiki/Q127193929)  
**Source**: https://4ort.xyz/entity/wer-ist-wer-in-der-philatelie-3-ed-


## References

1. Catalog of the German National Library
2. German National Library