Tribal and cultural ties of the Bulgarian and Russian peoples

Derzhavin, N.S.The tribal and cultural ties of the Bulgarian and Russian peoples / Acad.N.S.Derzhavin.- Moscow ;Leningrad: Publishing House of the Academy of Sciences of the USSR, 1944. -86, [2] s .. -(Scientific and popular series of the Academy of Sciences of the USSR).-Bibliogr.in the text and subscription.Note..1. People, territory (collection).Electronic copy source: PBOriginal storage: St. Petersburg State University