Books by F. Ris:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Ris, F. (Friedrich), 1867-1931: [Neuroptera Helvetiae, analytisch bearbeitet als Grundlage einer Neuropterenfauna der Schweiz. (F. Rothermel & Cie, 1885), also by Gustav Schoch (page images at HathiTrust)- Ris, F. (Friedrich), 1867-1931: Die Odonata von Dr. H.A. Lorentz' Expedition nach Südwest-Neu-Guinea 1909 und einige Odonata von Waigëu. ([E.J. Brill], 1913), also by Hendrikus Albertus Lorentz (page images at HathiTrust; US access only)
- Ris, F. (Friedrich), 1867-1931: Mass und gewicht (K. J. Wyss, 1894) (page images at HathiTrust)
- Ris, F. (Friedrich), 1867-1931: The Odonata or dragonflies of South Africa. ([Place of publication not identified], 1921) (page images at HathiTrust; US access only)
- Ris, F. (Friedrich), 1867-1931: A revision of the libelluline genus Perithemis (Odonata) (The University, 1930) (page images at HathiTrust; US access only)
Find more by F. Ris at your library, or elsewhere.