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Geology – it's our fault (white letters)
Geology – it's our fault (dark blue letters)
Everything is recyclable...eventually
Igneous rock compositions
Geology zodiac signs – sticker
Michel-Lévy interference color chart
Please do not put trash in toilets (camping pit toilet sign)
Minimalist periodic table (black ink)
Minimalist periodic table (white ink)
Normal fault (black ink)
Normal fault (white ink)
Let's Get Geophysical (black ink)
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