Formal theories of visual perception 2026-02-15T13:13:13+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Buffart, H. F. J. M.; Leeuwenberg, E. L. J. (Emanuel Laurens Jan) (Wiley, 1978)