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Petrolingua Ltd. (St. Petersburg / Northwestern Federal District / Russian Federation)
Privet! Russian Language School (Kaliningrad / Kaliningrad / Russian Federation)
Russian Centre of Education (Arkhangelsk / Northwestern Federal District / Russian Federation)
Swiss Center Ltd. (St. Petersburg / Northwestern Federal District / Russian Federation)
Nevsky Institute of Language & Culture (St. Petersburg / Northwestern Federal District / Russian Federation)
INTEX (Surgut / Ural Federal District / Russian Federation)
EF International Language Schools - Moscow (Moscow / Central Federal District / Russian Federation)
Megapolis (Moscow / Central Federal District / Russian Federation)
Delta - Intercontact (Tver / Central Federal District / Russian Federation)
Deutsche Zentrale für Tourismus (Moscow / Central Federal District / Russian Federation)