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Four-sheet topographic map of the residency of Probolinggo (East Java), with an inset map of distances between locations by rail and road, and a signal map. Crops, fishing ponds, sugar factories, and coffee and salt warehouses are shown.

A map of the watershed of the Bila and Pane rivers in northern Sumatra. In addition to many rivers/tributaries, mountains, roads, paths and administrative borders are marked. Side views of mountains (elevations) are shown to use a landmarks.

Four-sheet topographic map of the residency of Probolinggo (East Java), with an inset map of distances between locations by rail and road, and a signal map. Crops, fishing ponds, sugar factories, and coffee and salt warehouses are shown.