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John Valk: Witkruinmangabey, White Crowned Mangabay
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John Valk: Young Giraffe
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John Valk: Gelada monkeys
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John Valk: Black Rhino
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John Valk: Kroeskoppelikaan, Pelican
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John Valk: Lions
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John Valk: Ringstaart Makaak
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John Valk: Fjord horses in Midden Delfland
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John Valk: Blijdorp
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John Valk: Young Bison
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John Valk: Wabderoe, leeuwstaartaap of baardaap/ lion-tailed macaque
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John Valk: Gelada's
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John Valk: Texel
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John Valk: 'Fuut' and child, Schiedam, river Schie
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John Valk: Blijdorp Zoo Rotterdam
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John Valk: Blijdorp Zoo Rotterdam mhorrgazelle
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John Valk: Yellowstone Elk with young
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John Valk: Yellowstone
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John Valk: Yellowstone Buffalos
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John Valk: Serval with young
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John Valk: Kuifmakaken
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John Valk: Okapi
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John Valk: Lamar Valley Yellowstone
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John Valk: Terschellling
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John Valk: Young eliphant
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John Valk: Kaapse klipdas
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John Valk: _DSC2538
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John Valk: Zwarte neushoorn
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John Valk: P1530515
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John Valk: Kuifmakaken