# Gudbrand Helenus Hartmann
**Wikidata**: [Q23022090](https://www.wikidata.org/wiki/Q23022090)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Gudbrand_Helenus_Hartmann)  
**Source**: https://4ort.xyz/entity/gudbrand-helenus-hartmann