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Michel-Lévy interference color chart
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Please do not put trash in toilets (camping pit toilet sign)
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Minimalist periodic table (black ink)
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Minimalist periodic table (white ink)
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Normal fault (black ink)
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Normal fault (white ink)
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Let's Get Geophysical (black ink)
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Let's Get Geophysical (white ink)
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Minimalist QAPF diagram (for light backgrounds)
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Minimalist QAPF diagram (for dark backgrounds)
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I'm a big fan (an alluvial fan)
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Igneous, sedimentary, metamorphic (black ink)