Copi, Irving M.
Symbolic logic
Prentice-Hall, 1979
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Bickerton, Derek
Language and species
University of Chicago Press, 1990
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Darwin, Charles
The origin of species = asal-usul species
Ikon Teralitera, 2002
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Baron, Naomi S.
Alphabet to email : how written english evolved and where it's heading
Routledge , 2001
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Standley, Gerald B.
New methods in symbolic logic
Houghton Mifflin, 1971
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