# An essay on classification

> London: Longman, Brown, Green, Longmans, & Roberts [etc.], 1859.

**Wikidata**: [Q51425785](https://www.wikidata.org/wiki/Q51425785)  
**Source**: https://4ort.xyz/entity/an-essay-on-classification


## References

1. Biodiversity Heritage Library
2. Internet Archive
3. Library of Congress Online Catalog