On awarding the peasant of the peasant Vasily Dubinin for the introduction of an improved method of purifying black oil in the C...

On awarding the peasant of the peasant Vasily Dubinin for the introduction of an improved method of purifying black oil in the Caucasus with a silver medal.N. July 26, 1847 - K. April 18, 1848 - 1847. -13 l .. - (Caucasian committee. (1833-1882). Inventory No. 2).-Film..Electronic copy source: RGIAOriginal storage location: RGIA f.1268 op.2 d.602