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Keywords from Image Description:
KITLV Demmeni J. The Lobang Kubang narrowing in the Mahakam River at low tide Central Borneo .tif nl De Lobang Koebang een versmalling in de Mahakam bij laagwater MiddenBorneo Commissiereis naar Centraal Borneo onder leiding van dr Nieuwenhuis en The Lobang Kubang narrowing in the Mahakam River at low tide Central Borneo Borneo