GARDNER, MARTIN THE UNEXPECTED HANGING AND OTHER MATHEMATICAL DIVERSIONS: A CLASSIC COLLECTION OF PUZZLES AND GAMES FROM SCIENTIFIC AMERICAN - FIRST UNIVERSITY OF CHICAGO PRESS EDITION - ILLINOIS, USA THE UNIVERSITY OF CHICAGO PRESS 1991 - 263P. ISBN: 0226282562 Subjects--Topical Terms: RECREATIONMATHEMATICAL GAMES Dewey Class. No.: 793.74/GAR