# Die Kalkschwämme. Eine Monographie

> scholarly work published by Haeckel in 1873

**Wikidata**: [Q51389573](https://www.wikidata.org/wiki/Q51389573)  
**Source**: https://4ort.xyz/entity/die-kalkschw-mme-eine-monographie


## References

1. Biodiversity Heritage Library
2. Library of Congress Online Catalog