National languages in the USSR : Problems and solutions /
Isayev, M.I.
National languages in the USSR : Problems and solutions / M.I. Tsayev. - Moscow : Progress Publ. , 1977. - 431 p.
Национальные языки
National languages in the USSR : Problems and solutions / M.I. Tsayev. - Moscow : Progress Publ. , 1977. - 431 p.
Национальные языки