1001 Ideas That Changed the Way We Think
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In Search of P. D. Ouspensky The Genius in the Shadow of Gurdjieff
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Zondervan Illustrated Bible Dictionary
J. D. Douglas & Merrill C. Tenney
A Dictionary of Music and Musicians (A.D. 1450-1880): By Eminent ...
George Grove
WordNet: An Electronic Lexical Database
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Too big to know: das Wissen neu denken, denn Fakten sind keine ...
David Weinberger