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+Bildquellen
+Knuth (CC BY-SA 2.5):
+https://commons.wikimedia.org/wiki/File:KnuthAtOpenContentAlliance.jpg
+Lamarr (Public Domain):
+https://commons.wikimedia.org/wiki/File:Hedy_lamarr_-_1940.jpg
+Lovelace (Public Domain):
+https://commons.wikimedia.org/wiki/File:Ada_Lovelace.jpg
+Hopper (CC BY-SA 4.0):
+https://commons.wikimedia.org/wiki/File:Grace_Murray_Hopper,_in_her_office_in_Washington_DC,1978,%C2%A9Lynn_Gilbert.jpg
+Turing (Public Domain):
+https://commons.wikimedia.org/wiki/File:Alan_Turing_Aged_16.jpg
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