Wisu
From Wikipedia, the free encyclopedia
Wisu (or Isu) is a historical area in Upper Kama, modern Perm Krai of Russia.
In the 10th–14th centuries this area was described by Ahmad ibn Fadlan, Al-Gharnati and others. In Russian chronicles of the 12th–16th centuries it is known as Great Perm.
There is an information about Wisu's tributes to Volga Bulgaria.