# Markus O. Speidel

> German engineer, metallurgist and university teacher

**Wikidata**: [Q95316745](https://www.wikidata.org/wiki/Q95316745)  
**Source**: https://4ort.xyz/entity/markus-o-speidel


## References

1. Catalog of the German National Library
2. Integrated Authority File
3. Virtual International Authority File
4. CONOR.SI
5. National Library of Israel Names and Subjects Authority File