Lot of 6 Logic Math Philosophy Books - Dover & Harvard, Quine, Russell, Boole

Logic Colloquium, 1969 by C. Yates (Hardcover)

First-Order Logic by Raymond M Smullyan: Used

First-Order Logic by Raymond M Smullyan: New

System of Logic : Ratiocinative and Inductive by John Stuart Mill Hardcover 1959

Comments on the foundations of set theory -in: Axiomatic Set Theory Proceedings

Sets, Model and Recusion Theory 1967 Ed J.N Crossley Logic Colloquium 1965

First-Order Logic by Smullyan, Raymond M.