# The System of Economic Contradictions, or The Philosophy of Poverty

> essay by Pierre-Joseph Proudhon

**Wikidata**: [Q3962164](https://www.wikidata.org/wiki/Q3962164)  
**Source**: https://4ort.xyz/entity/the-system-of-economic-contradictions-or-the-philosophy-of-poverty


## References

1. Integrated Authority File
2. Virtual International Authority File
3. Freebase Data Dumps. 2013
4. National Library of Israel Names and Subjects Authority File
5. Goodreads