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Objective Knowledge: An Evolutionary Approach by Karl Popper Paperback Book

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Karl Popper Unended Quest (Paperback) Routledge Classics (UK IMPORT)

The Open Society and Its Enemies (Routledge Classics) by Karl Popper Paperback

Conjectures and Refutations : The Growth of Scientific Knowledge by Karl Popper

The Open Society and Its Enemies: Volume 1: The Spe... by Popper, Karl Paperback