# δ13C

> measure of relative carbon-13 concentration in a sample

**Wikidata**: [Q3278929](https://www.wikidata.org/wiki/Q3278929)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Δ13C)  
**Source**: https://4ort.xyz/entity/13c


## References

1. Freebase Data Dumps. 2013
2. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)