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Bill Mertens: Water Lily
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Bill Mertens: Water Lily II
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Bill Mertens: Cypripedium acaule L.
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Bill Mertens: Cypripedium acaule L.
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Bill Mertens: Rudbeckia
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Bill Mertens: Closed Bottle Gentian
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Bill Mertens: Pink Water Lily
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Bill Mertens: Water Lily in B&W
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Bill Mertens: Water Lily