Elementary Applied Symbolic Logic Hardcover Bangs L Tapscott

Symbolic Logic Fifth Edition Irving Copi Hardcover

Symbolic Logic by Irving M. Copi (1979, Hardcover)

Elementary Symbolic Logic – Gustason & Ulrich Hardcover 1973/1982

Logic in Elementary Mathematics, Exner/Rosskopf, VTG 1959 HC/DJ Textbook

Modern Logic, A Text in Elementary Symbolic Logic by Forbes

Elementary Logic – Benson Mates – 1972 2nd Ed. – Hardcover

Elementary Symbolic Logic by William Gustason