N. Nasarev.Children's poems and jokes.The review of D.K.Zelenina.Kargopol district, Olonets province.

N. Nasarev.Children's poems and jokes.The review of D.K.Zelenina.Kargopol district, Olonets province.- 1908. -Agreement No. 24 of 02/12/2016 category 25 manuscript of the works of members of the Russian Geographical Society and individual documents in the Olonets province, case 56..Electronic copy source: PB