Novomoskovsk (Russian: Новомоско́вск), called Bobriki (Бо́брики) before 1934 and Stalinogorsk (Сталиного́рск) between 1934 and 1961, is a city in Tula Oblast, Russia, located at the source of the Don and Shat Rivers some 230 km south of Moscow, at 54°2′N38°16′E / 54.033, 38.267. Population: 134,081 (2002 Census); 143,000 (1974); 107,000 (1959); 76,000 (1939).