Author Розов В.А. Description Construction and technical program of Ryazan / Ryaz. mountains. office. Techn. Department ; Foreword. V.A. Rozov. - Ryazan: Type. "Labor", 1918. -340 pp., 1 liter. kart. : table .. - . I. Rozov, V.A. Source of the electronic copy: PB Publisher тип. "Труд"