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J. M. Gallagher
Webster's Dictionary and Thesaurus
Merriam-Webster, Inc
One Taste: Daily Reflections on Integral Spirituality
Kenneth E. Wilber
Teaching Johnny to Think: A Philosophy of Education Based on ...
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Riddles of the Sphinx: And Other Mathematical Puzzle Tales
Martin Gardner
Philosophy of Mind: 50 Puzzles, Paradoxes, and Thought Experiments
Torin Alter & Robert J. Howell & Amy Kind