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The German original of this article has been the source for the majority of the content of this biography, however, given that the subject is still living, I have omitted from the English version remarks in the German that infer that Groebli failed to fairly recognise the contributions of his colleagues and employees in writing his book on colour photography. Jamesmcardle(talk) 11:43, 16 November 2018 (UTC)[reply]
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