by Graham Round (Illustrator), Graham Round (Illustrator), Jenny Tyler (Author)
-- Puzzle books full of thought provoking problems and brain teasers-- Clues at the end of each book help with the more difficult problems
Format: Paperback
Pages: 32
Edition: illustrated edition
Publisher: Usborne Publishing Ltd
Published: Aug 1980
ISBN 10: 0860204375
ISBN 13: 9780860204374