Eastern Mansi
[别称 Eastern Vogul, восточно-мансийский язык, кондинский-мансийский язык]语系：Uralic
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The Wikipedia page for the Mansi language of Russia, which has four dialect: Northern, Southern, Eastern and Western. Very well detailed, with information on grammar, phonetics and a comparison with Hungarian, as well as various further readings (in various languages).