ではさらに少ない2母音体系である可能性が考えられている。 Foley, William A. (1986). The Papuan Languages of New Guinea. Cambridge: Cambridge University Press. ISBN 0-521-28621-2. OCLC 13004531
results of crosses between inbred strains ofguinea pigs, differing in number of digits. Genetics, 19(6), 537. ^ Wright, S. (1934). An analysis of variability
Empires of enterprise: German and English commercial interests in East New Guinea 1884 to 1914 Thesis (Ph.D.) University of Adelaide, School ofHistory and