Who created "Mountainous River Landscape with Boats"?

Mountainous River Landscape with Boats was created by Jan van der Meer (II) in 1687.

What medium is "Mountainous River Landscape with Boats"?

Mountainous River Landscape with Boats is black chalk, with grey wash, on vellum; framing line in black ink.

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Jan van der Meer (II), 1687