[Studies on geometric-optical illusions in vertebrates].
D000818:Animals; D001717:Birds; D003213:Conditioning, Psychological; D004192:Discrimination, Psychological; D005399:Fishes; D005556:Form Perception; D006168:Guinea Pigs; D006801:Humans; D007088:Illusions; D008433:Mathematics; D013028:Space Perception; D014796:Visual Perception
Untersuchungen übber geometrishe-optische Tauschungen bei Wirbeltieren.