| Our Knowledge of the External World as a Field for Scientific Method in Philosophy Russell, Bertrand / Used - Hardcover | Evening Star Books, ABAA/ILAB | Fine/VG+ | $385.00 |
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| Our Knowledge of the External World: As a Field for Scientific Method in Philosophy (1914) Russell, Bertrand Russell / Used - Hardcover | GreatBookPricesUK | As new | $60.04 |
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| Our Knowledge of the External World Russell, Bertrand / Used - Hardcover | Princeton Antiques Bookshop / Ruffolo Enterprises | | $50.00 |