Complete in 53 sheets, covering Residency of West Borneo only. Set includes various issues of some sheets. "Polyconic projection." "The longitude ... is based on the meridian of Batavia which is 106⁰482́7.79" east of Greenwich." Military grid. Contour interval 25 meters, with auxiliary contour interval 12.5 meters; changing at 100 meters to 100 meter contour interval." Some areas show relief by hachures with spot heights in meters. Five classes of roads or paths, two classes of railroads, and three types of internal boundaries are shown. Includes "Glossary." Marginal maps: Index to boundaries.--Index to adjoining sheets.
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