Books by Rudolf Christof Eucken:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Eucken, Rudolf Christof, 1846-1926: The problem of human life as viewed by the great thinkers from Plato to the present time (C. Scribner's sons, 1912), also by William Ralph Boyce Gibson and Williston Samuel Hough (page images at HathiTrust)
Find more by Rudolf Christof Eucken at your library, or elsewhere.