Tumarkin, D. D. Bongu : one hundred years of social and cultural change in New Guinea / D.D. Tumarkin. - [Port Moresby] : University of Papua New Guinea, Dept. of Primary Industry [1979?]. - 24 leaves. - History of agriculture discussion paper ; no. 52 . Subjects--Topical Terms: Bongu (Papua New Guinea)--Social conditions.