Championship of the Netherlands, cycling amateurs on the track number 3 Peter van Doorn in action, number 4 M. Langkruis in action, number 5, 6 Klaas Balk (left) in Date: July 13, 1972 Keywords: AMATORS, CHAMPIES, CYCLING Personal name: Doorn, Peter van, Klaas Balk, M. Langkruis

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Photo credit: © BNA Photographic / Alamy / Afripics
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