Filtra

Lenda - Center (San Pietroburgo / Northwestern Federal District / Russia)
ABC International Language & Training School (San Pietroburgo / Northwestern Federal District / Russia)
Inlingua - Moscow (Mosca / Central Federal District / Russia)
Best Teach Language Center (San Pietroburgo / Northwestern Federal District / Russia)
Extra Class Language Center (San Pietroburgo / Northwestern Federal District / Russia)
ILDI Voyages (San Pietroburgo / Northwestern Federal District / Russia)
International Language School Cosmopolitan (Novosibirsk / Siberian Federal District / Russia)