"Karl Voll (18 July 1867 in Würzburg - December 25, 1917 in Munich) was German art historian specialising in Dutch renaissance and baroque art.
^ "Karl Voll". Deutsche Digitale Bibliothek. Retrieved 12 October 2019^ "Voll, Karl". Dictionary of Art Historians. Retrieved 12 October 2019" - (en.wikipedia.org 19.11.2019)
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