# The Coloring of Graphs

> Article by Hassler Whitney published in PNAS, 1931

**Wikidata**: [Q138568891](https://www.wikidata.org/wiki/Q138568891)  
**Source**: https://4ort.xyz/entity/the-coloring-of-graphs


## References

1. Europe PubMed Central
2. DOI.org query endpoint
3. PubMed