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KITLV Demmeni J. Legation of the Lower Mahakam to the Bloeoe River Central Borneo. Sitting from the left to the right Dr. A. W. Nieuwenhuis Si Ding Ledju. Besides standing Mohammed Raib .tif nl Gezantschap van de BenedenMahakam naar de Bloeoe MiddenBorneo Zittend dr Nieuwenhuis Si Ding Ledju Daarnaast staande Mohammed Raib Borneoexpeditie