DescriptionGraphite (Ceylon) 34.jpg English: Graphite from Ceylon (Sri Lanka). A mineral is a naturally-occurring, solid, inorganic, crystalline substance...
DescriptionGraphite (Ceylon) 33.jpg English: Graphite from Ceylon (Sri Lanka). A mineral is a naturally-occurring, solid, inorganic, crystalline substance...
This file has an extracted image: Outline map of the Peruvian Expedition of 1912.jpg....
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