@book{UBHD-1042188, editor={Gregory, Richard L.}, title={Illusion in nature and art}, publisher={Duckworth}, address={London}, year={1973}, pages={288 S.}, language={eng}, isbn={0-7156-0759-6 and 978-0-7156-0759-6}, keywords={Natur / Illusion ; Kunst / Illusion}, library={UB [Signatur: 76 B 1652] ; KU [Signatur: P 267]}, }