Preposterous Puzzles (Hippo Puzzles)de Rolf HeimannMateriasPuzzlesJuvenile literatureEdiciones (1)Preposterous Puzzles (Hippo Puzzles) (1991)Scholastic Hippo · ISBN 9780590765770Más obras de Rolf HeimannFor eagle eyes onlyRolf Heimann's Bizarre brainbenders.Amazing mazesT