Sole Tim Nearly impossible brain bafflers : official American Mensa puzzle book / Tim Sole & Rod Marshall. - New York : Sterling, 1998. - 95 p. : ill. ; 21 cm. Includes index. ISBN: 0806962933 Subjects--Topical Terms: PuzzlesMathematical recreations LC Class. No.: GV1493 Dewey Class. No.: 793.73