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Keywords from Image Description:
Lilienthal wingflap exp. en Measurements of wing flapping woodcut published in Otto Lilienthal Der Vogelflug als Grundlage der Fliegekunst and Birdflight as the Basis of Aviation fig de Versuchsaufbau fr Flgelschlagexperimente in Altwigshagen bei Anklam Holzstich Otto Lilienthal Der Vogelflug als Grundlage der Fliegekunst Otto