Reports and communications concerning Indian Minerals and their aplications No. 4. Mining Geological investigation in Benkulen and Palembang. II. Bengkulen-report, with 5 maps.
The first information about the occurrence of the minerals in the residency of benkoelen, whitch may be considered as accurate, came from MARSDEN (See bibliography Nr. 5 at the end of this treatise). on the page 168 the aouthor reports, thath from a reliable source in became known to him that (annually?)
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Pusat Sumber Daya Mineral, Batubara dan Panas Bumi - Jln. Soekarno Hatta No. 444, Bandung, Jawa Barat
PMB LA 1918-2