On vacation of the Academy of Sciences to purchase devices for monitoring solar eclipses.April 25 - May 6.

On vacation of the Academy of Sciences to purchase devices for monitoring solar eclipses.April 25 - May 6./ Council of Ministers.- 1913. -12 l .. - (Council of Ministers .. Inventory inventory №9. 1913.).-Science and education.Film..I. Council of Ministers ..Electronic copy source: RGIAPlace of Storage Original: RGIA F.1276 op.9 d.654