Robison, Gerson B. An introduction to mathematical logic [by] Gerson B. Robison. - Englewood Cliffs, N.J. Prentice-Hall [1969] - xi, 212 p. 24 cm. LCCN: 69014806 Subjects--Topical Terms: Logic, Symbolic and mathematical LC Class. No.: QA9 / .R72 Dewey Class. No.: 164