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Part-XVIII of the 1950 Order lists 16 tribes of Arunachal include
Abor, Aka, Apatani, Nyishi, Galong, Khampti, Khowa, Mishmi [Idu, Taroon], Momba, Any Naga tribes, Sherdukpen, Singpho, Hrusso, Tagin, Khamba and Adi.
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Source: The Indian Express