# Mario Petrich

> Ph.D. University of Washington 1961

**Wikidata**: [Q95216666](https://www.wikidata.org/wiki/Q95216666)  
**Source**: https://4ort.xyz/entity/mario-petrich


## References

1. Czech National Authority Database
2. Mathematics Genealogy Project
3. Catalog of the German National Library
4. Virtual International Authority File