modified:   Hurley P.J. A concise introduction to logic (11ed., Wadsworth, 2012)(ISBN 0840034172)(O)(750s)_MAml_.pdf
	modified:   Hurley P.J. A concise introduction to logic (11ed., Wadsworth, 2012)(ISBN 0840034172)(O)(750s)_MAml_.pdf
	modified:   Hurley P.J. A concise introduction to logic (11ed., Wadsworth, 2012)(ISBN 0840034172)(O)(750s)_MAml_.pdf