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Michel-Lévy interference color chart
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Tree frog design by 7-year-old
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Please do not put trash in toilets (camping pit toilet sign)
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Gay geology: normal fault
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Minimalist QAPF diagram (for dark backgrounds)
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Minimalist QAPF diagram (for light backgrounds)
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Rocks before cocks
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Atomic structure of beryl
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In This Geology House...
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Let's Get Geophysical (white ink)
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Smash the Petri-archy
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Stereonet (white ink)