23 years, g. Novocherkassk (Rostovskaya oblast′)

59 years, Tula

68 years, Moscow

g. Zheleznogorsk

Kharkiv

38 years, Черная речка

Kokshetau

66 years, Tashkent

76 years, Riga

38 years, Tokmak

68 years, Rostov-on-Don

67 years, Ryazan

65 years, Рыбное

69 years, Moscow

24 years, Ростов-на-Дону