- For the Terre Haute, Indiana radio station, see WISU.
Wisu (or Isu) is the name of the Upper Kama region (modern Perm Krai of Russia) in the works of medieval Arab travellers such as Ahmad ibn Fadlan and Al-Gharnati. They mention that the area paid tribute to Volga Bulgaria. In Russian chronicles the same region is known as Great Perm.
References
(Tatar)"Вису". Tatar Encyclopedia. Kazan: Tatarstan Republic Academy of Sciences Institution of the Tatar Encyclopaedia. 2002.
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