Рисунок к статье «Вобан». Могила. Военная энциклопедия Сытина (Санкт-Петербург, 1911-1915), before 1913

This image was used in the article "vauban" published in the sixth volume of the "military encyclopedia", which was published by the publishing company of ivan dmitrievich sytin in 1912 in the capital of the russian empire, st. Petersburg. Date: before 1913.