Ross Malcolm. Proto Oceanic and the Austronesian languages of Western Melanesia

The Australian National University, Research School of Pacific Studies, 1988. — 502 p. — (Pacific Linguistics: Series C 98).The purpose of this work is to elucidate the higher-order genetic relationships of the Austronesian (AN) languages of the Papua New Guinea (PNG) region.
There is today a widespread acceptance among Austronesianists of the 'Oceanic hypothesis', according to which all the Austronesian languages of Oceania east of a line drawn from north to south through the western Pacific are descended from a single proto language, today named 'Proto Oceanic' (POC).i Its descendants are known simply as the 'Oceanic languages'. This line divides Chamorro (Mariana Islands) and Belau (formerly Palau) from the rest of Micronesia and bisects the north coast of the island of New Guinea at 138°E longitude.