Belyaev.A preliminary report on astronomical works carried out in 1913 by the Olonets expedition of the Russian Geographical Soc...

Belyaev.A preliminary report on astronomical works carried out in 1913 by the Olonets expedition of the Russian Geographical Society.The list of astronomical points determined in 1913 by the Olonets expedition was attached.- 1914. -Agreement No. 24 of 02/12/2016 category 25 manuscript of the works of members of the Russian Geographical Society and separate documents in the Olonets province, case 66..Electronic copy source: PB