Books by Jules Dumur:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Dumur, Jules, 1840-: Das schweizerische dreiecknetz (Commission von S. Höhr, 1881), also by Schweizerische Geodätische Kommission, Jean Jacques Lochmann, Rudolf Wolf, Joh. Bapt. Messerschmitt, A. Hirsch, and Internationale Erdmessung (page images at HathiTrust)
Find more by Jules Dumur at your library, or elsewhere.