Books by Friedrich Risner:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Risner, Friedrich, -1580: Opticæ thesavrvs (Basiliae : Per Episcopios, MDLXXII [1572], 1572), also by Alhazen, Abū ʻAbd Allāh Muḥammad ibn Muʻādh Jayyānī, active 13th century Witelo, Eusebius Episcopius, Gherardo da Cremona, and Nicolaus Episcopius der Jüngere Erben (page images at HathiTrust)- Risner, Friedrich, -1580: Risneri Opticam (in aedibus Plantini, 1918), also by Johan Adriaan Vollgraff and Willebrord Snellius (page images at HathiTrust; US access only)
Find more by Friedrich Risner at your library, or elsewhere.