Copi, Irving M.
Introduction to logic
Macmillan, 1961
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Copi, Irving M.
Informal logic
Prentice-Hall, 1995
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Bergmann, Merrie
The logic book
McGraw-Hill, 1990
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Mates, Benson
Elementary logic
Oxford University Press, 1965
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Copi, Irving M.
Introduction to logic
Macmillan, 1972
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