Editore: Dover Publications, Incorporated, Mineola, NY, U.S.A., 1992
ISBN 10: 0486270971 ISBN 13: 9780486270975
Da: Acme Books, Alton, NH, U.S.A.
Soft cover. Condizione: Very Good. No Jacket. No Additional Printings. Light edgewear, clean interior, mazes NOT solved.
Editore: Dover Publications, 1992
ISBN 10: 0486270971 ISBN 13: 9780486270975
Da: My Dead Aunt's Books, Hyattsville, MD, U.S.A.
Paperback. Condizione: GOOD. Creasing on spine and moderate wear on covers. The puzzles themselves are unmarked and unsolved.