Die Zen-Lehre
Jean Gebser
Leo Tolstoi - Gesammelte Werke.
Leo Tolstoi
Topology Problem Solver
Research & Education Association & Emil G. Milewski
The Venetian Empire 1200–1670
David Nicolle & Christopher Rothero
Philosophy Then and Now: A Look Back at 26 Centuries of Thought ...
Zaine Ridling
Social Network Analysis: Theory and Applications
Wikipedia