Barker, Stephen Francis
The elements of logic / - 5th. ed. - New York, N.Y., US : McGraw-Hill, 1989. - 291 p.
0-07-003730-2
Logic, Symbolic and mathematical
The elements of logic / - 5th. ed. - New York, N.Y., US : McGraw-Hill, 1989. - 291 p.
0-07-003730-2
Logic, Symbolic and mathematical