Tonal status information sources for Biyom
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bpm (biyo1244)
Nuclear Trans New Guinea (nucl1709) > Madang (mada1298) >...> Unclassified Rai Coast (unun9972)
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Data on the tonal status from other sources
Hammarström & Mannby?
HymanDB?
LAPSyD?
WALS?
Tonal status verified