Russia) Nauchno-prakticheskai︠a︡ konferent︠s︡ii︠a︡ "Estestvenno-nauchnye issledovanii︠a︡ v Simbirsko-Ulʹi︠a︡novskom krae na rubezhe vekov" (1999 Ulʹi︠a︡novsk

Books by Russia) Nauchno-prakticheskai︠a︡ konferent︠s︡ii︠a︡ "Estestvenno-nauchnye issledovanii︠a︡ v Simbirsko-Ulʹi︠a︡novskom krae na rubezhe vekov" (1999 Ulʹi︠a︡novsk on BookTides.