Eye teasers optical illusion puzzles /
Paraquin, Charles H.
Kuttner, Paul.
London Dragon Books
1979
Translator: Paul Kuttner. - With answers
This translation originally published: New York : Sterling [etc.] ; London : Distributed by Ward Lock, 1976. - Translation of: 'Schummelbilder'. Ravensburg : Otto Maier, 1975
Includes index
Optical illusions