Held, G. J. De Papoea : culturimprovisator / Dr. G.J. Held. - s'Gravenhage : W. van Hoeve, 1951. - 232 p. : ill., maps ; 24 cm. Subjects--Topical Terms: Papuans--Social life and customs. Subjects--Geographic Terms: Papua New Guinea--Social life and customs.New Guinea--Social life and customs.