Selected works

* Amerikanische Hexactinelliden nach dem Materiale der Albatross-Expedition. Jena 1899.
* Hexactinellida. Jena: G. Fischer, 1904.
* Die Xenophyophoren der Siboga-Expedition. Leiden: Brill, 1906.

Notes

References

* "This article incorporates translated text from an equivalent article at the German Wikipedia".

External links

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