Short description: In Russian. Rybak, Khariton Aronovich. Maintenance of relay protection of electrical automation and secondary circuits of substations. Moscow: Energiya, 1976. Obsluzhivanie releynoy zashchity elektroavtomatiki i vtorichnykh tsepey podstantsiy. In Russian /Maintenance of the relay protection of electrical automation and secondary circuits of substations. 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. SKU6973895