Alexey Balov.Folk riddles, songs and children's jokes recorded in the Slavon district of the Yaroslavl province.

Alexey Balov.Folk riddles, songs and children's jokes recorded in the Slavon district of the Yaroslavl province.- -.-Agreement No. 24 of 02/12/2016 Category 47 manuscripts of the works of members of the Russian Geographical Society and individual documents in the Yaroslavl province, case 38..Electronic copy source: PB