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Seven locations in the Dutch East Indies on one sheet: the islands of Borneo, Sumatra, Celebes (Sulawesi), Ambon and Banda, the city of Padang and its region on the west coast of Sumatra, and the tip of the Minahasa Peninsula (northern Celebes).

A geological map, spread over eight sheets, showing the types of rock and minerals found in the Oembilien coalfield, in the Padang Highlands on Sumatra’s west coast. There are also additional geological profiles.