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Map of an expedition exploring two rivers and their tributaries in southern Borneo. Villages and farms are marked (in red for Malay people; in black for Dayak people). Red numbers show height above sea-level in meters; black numbers show latitude.

Four-sheet topographic map of the residency of Rembang (Central Java) divided into regencies (pink borders) and districts (yellow borders). Crops—coconut, rice, coffee, bamboo, alang-alang, sugarcane—as well as salt pans and fishing ponds are shown.