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cas lad: sand and shell
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cas lad: Sea Urchin - lit from below
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cas lad: Sea Urchin
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cas lad: Nautilus Slice II
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cas lad: Sliced Screw Shells
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cas lad: A slice from a Nautilus Shell
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cas lad: The Golden Number
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cas lad: The Golden Ratio
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cas lad: Nautilus Shell
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cas lad: Nautilus Shell mono
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cas lad: Nautilus-IV
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cas lad: Nature's shuttlecock