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Rock Art of Baja California (1994–1996) GCI scientist Arie Wallert takes samples of the paint pigments at Cueva del Ratón. Photo: Nicholas Stanley-Price. |
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Rock Art of Baja California (1994–1996) GCI scientist Arie Wallert takes samples of the paint pigments at Cueva del Ratón. Photo: Nicholas Stanley-Price. |
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