When did Russian settlements arise on the Ugra "dollar land"?

Petrov, A.When did Russian settlements arise on the Ugra "dollar land"?: (Chapter from the VI release of materials for the history of Ugric Rus).- St. Petersburg: Type.Imp.Acad.Sciences, 1911. -[2], 20 s .. -Part of the text in lat.ulcer.Bibliogr.In the tuning.Note .. - Dep.Ott.From the news of the branch of the Russian language and the literature of the Imperial Academy of Sciences, vol. XVI (1911), book.one..1. Territory (collection).Electronic copy source: PBOriginal storage location: Samara OUNB