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Detailed map of Java based on the expeditions of the geologist and botanist Dr. Franz Junghuhn. There are 16 inset maps featuring volcanoes, mountains and coal seams.

Detailed map of Java based on the expeditions of the geologist and botanist Dr. Franz Junghuhn. There are 16 inset maps featuring volcanoes, mountains and coal seams.

Map charting expeditions in southern and eastern Borneo by the German geologist Carl Schwaner in the 1840s. Includes an inset map of rivers and watersheds in central Borneo, nine cross sections of the heights of rivers, and a plan of a gold mine.