# Key to Robinson's new geometry and trigonometry, and conic sections and analytical geometry

> 1862 version

**Wikidata**: [Q104695879](https://www.wikidata.org/wiki/Q104695879)  
**Source**: https://4ort.xyz/entity/key-to-robinson-s-new-geometry-and-trigonometry-and-conic-sections-and-analytical-geometry


## References

1. [Source](https://archive.org/metadata/keytorobinsonsne00robi)