Short description: In Russian. Frolov, Alexander Nikolaevich. General Principles of Railway Economy: Petrograd: Special Editions of the NKPS, 1922. Obshchie osnovy zheleznodorozhnogo khozyaystva. In Russian /General railway framework. The image is provided for reference only. It may reflect condition of one of the available copies or only help in identifying the edition. Please feel free to contact us for a detailed description of the copies available. SKU9189179