al_escher01_horseman.jpg,193861,CD9CC2F8,---
al_escher02_circle_limit_with_butterflies.jpg,212461,1E23DEAA,---
al_escher03_depth.jpg,321775,5348808E,---
al_escher04_verbum.jpg,266934,067B955B,---
al_escher05_relativity.jpg,329441,9C968295,---
al_escher06_waterfall.jpg,314320,A2F18279,---
al_escher07_magic_mirror.jpg,318040,A49D93F9,---
al_escher08_whirlpools.jpg,249308,1296C803,---
al_escher09_symetry_drawing_69.jpg,206808,0DDFEBFB,---
al_escher10_division.jpg,262635,2EDD19F6,---
al_escher11_birds_in_space.jpg,201823,21D01717,---
al_escher12_ascending_and_descending.jpg,281771,7CD60F3F,---