The Cathars: The Most Successful Heresy of the Middle Ages
Sean Martin
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Stefan Decker & Jeen Broekstra & Michel Klein & Dieter Fensel & Frank van Harmelen & Ian Horrocks
The Right Word in the Right Place at the Right Time
William Safire
Risikomanagement in Projekten: Internationale Wagnisse identifizieren ...
James R. Pinnells & Eleanor Pinnells
100 Words Almost Everyone Confuses and Misuses
American Heritage Dictionaries
The Oxford Handbook of Philosophy of Science
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