Short description: In Russian. Zaretskas, Vincentas-Saulius Simono. Mercury switching elements for automation devices. Moscow: Energy, 1971. Rtutnye kommutiruyushchie elementy dlya ustroystv avtomatiki. In Russian /Mercury switching elements for automation devices. 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. SKU7086408