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Georges Ivanovich Gurdjieff
The jungle: the uncensored original edition
Upton Sinclair
Death
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Karl Popper's Philosophy of Science: Rationality without Foundations
Stefano Gattei
Stonehenge Today & Yesterday
Frank Stevens
Art and Human Development
Constance Milbrath & Cynthia Lightfoot
Jean Piaget Symposia Series (1)
Piaget, Evolution, and Development
Jonas Langer & Melanie Killen