Hurley, Patrick J. A Concise introduction to logic / Patrick J. Hurley. - 5th ed. - Belmont, Calif. : Wadsworth Pub., c1994 - pages : illustrations ; cm. Glossary : p. G612 - G624. Includes index. ISBN: 0534211747 Subjects--Topical Terms: Logic LC Class. No.: BC108 / H93 1994