Notebook D28: Selected Research Papers of Don Laycock on Languages in Papua New Guinea: Yerakai, Yinibu (Iteri), Biami (Piame) /Bikaru/Paka (pejorative, better: Setiali), Singsing data (flutes) (Kwoma).?Don Laycock (compiler). n.d. Pacific And Regional Archive for Digital Sources in Endangered Cultures (PARADISEC). paradisec.org.au/repository/DL2/items/039.