Semen Markovich Levin

• Organizat︠s︡ii︠a︡ truda i tekhnicheskoe normirovanie na predipii︠a︡tii︠a︡kh chernoĭ metallurgii
• Organizat︠s︡ii︠a︡ zarabotnoĭ platy v chernoĭ metallurgii