T. Struve.Observations of meteor sediments of the Voronezh province, Valuysky district.

T. Struve.Observations of meteor sediments of the Voronezh province, Valuysky district.- 1872. -Agreement No. 24 of 02/12/2016 category 9 manuscript of the works of members of the Russian Geographical Society and separate documents on the Voronezh province, case 87..Electronic copy source: PB