Russia. The corps of mining engineers
Draft submission of the Headquarters of the Mountain Engineers Corps on the establishment in Beijing of a Magnetic and Meteorological Observatory with a draft staffing plan attached. 1862,
Ryabikov Pavel Fedorovich, general, professor of the General Staff Academy. Articles V. Kudrevatov, K. Lavrov and others on the Far East (routes of communication, mining, trade, gold, forest, fur, fish and whaling).