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Cambridge University Press
> G. Boolos
G. Boolos
title
ISBN-13
(ISBN-10)
year of publication
Title: The Unprovability of Consistency An Essay in Modal
978-O-521-21879-5
(O-521-21879-9)
1979
G.B.
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George Boolos
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George (ed.) Boolos
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George S. Boolos
G. Boomsma