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In den WarenkorbPaperback. Zustand: Very Good. THERE ARE NO TARIFFS OR CUSTOMS DUTIES ON BOOKS. A stereogram is a two-dimensional image designed to produce a three-dimensional (3D) illusion, often appearing as a hidden image within a patterned surface (like "Magic Eye" books). By intentionally shifting focus to decouple eye convergence, the brain combines subtle, repeated patterns to perceive depth.