International motocross on the Grebbeberg near Rhenen Gerrit Wolsink (H7) in the race of the 500 cc engines Annotation: For Wolsink with H31 Frans Karsmakers. With H33 Pierre Karsmakers Date: 20 May 1971 Location: Grebbeberg, Rhenen, Utrecht (province) Keywords: motocross, motorcycles, motorsports, sports Personal name: Karsmakers, Pierre, Selling, Frits, Wolsink, Gerrit

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Photo credit: © BNA Photographic / Alamy / Afripics
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