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John van Beers: Crowned Sifaka
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John van Beers: Blue-eyed lemur sunbathing
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John van Beers: Javan Lutung
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John van Beers: White-faced saki with baby
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John van Beers: White-faced saki with baby
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John van Beers: Young gorilla dangling
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John van Beers: Young gorilla beats his chest