# surplus value

> central concept in Karl Marx's theory of value and critique of political economy

**Wikidata**: [Q332425](https://www.wikidata.org/wiki/Q332425)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Surplus_value)  
**Source**: https://4ort.xyz/entity/surplus-value


## References

1. BnF authorities
2. Freebase Data Dumps. 2013
3. Faceted Application of Subject Terminology
4. YSO-Wikidata mapping project
5. Treccani Vocabulary
6. National Library of Israel
7. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)