Clark, Gordon Haddon. Logic / Gordon H. Clark. - Jefferson, Md. (P.O. Box 169, Jefferson 21755) : Trinity Foundation, c1985. - xi, 123 p. : ill. ; 21 cm. - Trinity paper ; no. 9 . ISBN: $8.95 (pbk.) LCCN: 86110154 Subjects--Topical Terms: Logic. LC Class. No.: BC108 .C58 Dewey Class. No.: 160