# Blue and Brown Books

> book by Ludwig Wittgenstein

**Wikidata**: [Q922500](https://www.wikidata.org/wiki/Q922500)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Blue_and_Brown_Books)  
**Source**: https://4ort.xyz/entity/blue-and-brown-books


## References

1. [Source](https://archive.org/details/wittgensteinvery00acgr)
2. Goodreads