First-Order Logic by Raymond M Smullyan: Used

First-Order Logic by Raymond M Smullyan: New

The Method of Coordinates by I. M. Gelfand, E. G. Glagoleva & A. A. Kirillov

Logical Labyrinths by Raymond Smullyan (2008, Hardcover) - CRC Press

Introduction to Inequalities, Beckenbach & Bellman, MAA New Mathematical Library

First-Order Logic by Smullyan, Raymond M.

First-Order Logic by Raymond M. Smullyan (English) Paperback Book

Geometry: A High School Course, 2nd edition, Serge Lang & Gene Murrow, Hardcover