Chuvash in everyday, historical and religious relations: their origin, language, rituals, beliefs, traditions, etc. / V. Sboev .- Moscow: type. S. Orlova, 1865 .- [1], 188 p. ; 21 centimeters
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BBC 63.521 (= 635.1) -7
Source: RSL Storage: U 143/640; U 360/297; M 49/28