https://eric.ed.gov/?id=ED549757
ERIC - ED549757 - The Tonology of Itoman Okinawan: A Phonological Analysis of the Nominal Tone...
Itoman, one of the varieties spoken in the southern part of Okinawa Island, exhibits several tone patterns. Although the tone patterns of Itoman were examined...
https://en.wikipedia.org/wiki/Itoman
Itoman, Okinawa - Wikipedia
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