# Conrad Haas

> Austrian military engineer (1509–1576)

**Wikidata**: [Q697581](https://www.wikidata.org/wiki/Q697581)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Conrad_Haas)  
**Source**: https://4ort.xyz/entity/conrad-haas


## References

1. [Source](http://io9.com/who-invented-the-rocketship-1494538794)
2. Integrated Authority File
3. Freebase Data Dumps. 2013
4. CERL Thesaurus