# Albert Johannsen

> American geologist, mineralogist, petrographer and professor

**Wikidata**: [Q19355989](https://www.wikidata.org/wiki/Q19355989)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Albert_Johannsen)  
**Source**: https://4ort.xyz/entity/albert-johannsen


## References

1. Integrated Authority File
2. Virtual International Authority File
3. CONOR.SI
4. Catalogo of the National Library of India