By Henle, James M.
By Laws
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By The Times Mind Games
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By Smullyan, Raymond
By Allenby, R. B. J. T.
By Beaney
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By Quine, W. V.
By Mayblin, Bill, Cryan, Dan, Shatil, Sharron
By Nagel, Ernest, Newman, James R.
By Fernández-Fernández, Claudia
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By Fazio, Davide, Ledda, Antonio, Paoli, Francesco
By Weiss, Christina
By Woleński, Jan
By Mundici, D.
By Markin, Vladimir, Zaitsev, Dmitry
By Casadio, Claudia, Scott, Philip J.
By Madarász, Judit, Szekely, Gergely
By Solozhentsev, E.D.
By Jech, Thomas
By Gibson, Arthur, O'Mahony, Niamh, Wittgenstein, Ludwig, Skinner, Francis
By Thompson, Paul B.
By Dowek, Gilles
By Polya, G., Conway, John H.
By Bundy, Alan