Books by Robert Z. Geller:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Geller, Robert Z.: Research on a method for converting shaft position data to binary digital information (Wright-Patterson Air Force Base, Ohio : Wright Air Development Center, Air Research and Development Command, United States Air Force, 1957., 1957), also by United States. Air Force. Air Research and Development Command and Inc Farrand Optical Co. (page images at HathiTrust)
Find more by Robert Z. Geller at your library, or elsewhere.