https://creativecommons.org/publicdomain/zero/1.0/ https://www.rawpixel.com/image/2098758 Boomstudie by George Andries Roth (1809–1887). Original from the Rijksmuseum. Digitally enhanced by rawpixel.

Boomstudie by George Andries Roth (1809–1887). Original from the Rijksmuseum. Digitally enhanced by rawpixel.

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