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Ngon ng? ky hi?u Vi?t Nam
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????????	haho1238 (Ha-Hoic) ; haip1238 (Haiphong Sign Language)

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↑ Nordhoff, Sebastian; Hammarstrom, Harald; Forkel, Robert; Haspelmath, Martin, eds. (2013). "Ha-Hoic" . Glottolog 2.2 . Leipzig: Max Planck Institute for Evolutionary Anthropology. {{ cite book }}: Invalid |display-editors=4 ( help )
↑ Nordhoff, Sebastian; Hammarstrom, Harald; Forkel, Robert; Haspelmath, Martin, eds. (2013). "Haiphong Sign Language" . Glottolog 2.2 . Leipzig: Max Planck Institute for Evolutionary Anthropology. {{ cite book }}: Invalid |display-editors=4 ( help )