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2. Settlement and economy in prehistoric Papua New Guinea: a review of the archaeological evidence;Bulmer;Journal de la Société des Océanistes,1975
3. New archaeological finds at Lake Sentani;de Bruyn;Nieuw Guinea Studïen,1959
4. Features of New Guinea area Austronesian languages;Capell,1976
5. History of migration in Indonesia as seen by a linguist;Foley,1981