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KITLV Demmeni J. Lubang Kubang passage in the Mahakam during the Borneo expedition led by Dr. A. W. Nieuwenhuis .tif nl Loebang Koebang doorgang in de Mahakam tijdens de Borneoexpeditie onder leiding van dr Nieuwenhuis en Lubang Kubang passage in the Mahakam during the Borneo expedition led by Dr Nieuwenhuis cm exhibition history