![Nikolai Dobronravin](/uploads/author/photo/75/medium_%D0%B4%D0%BE%D0%B1%D1%80%D0%BE%D0%BD%D0%B0%D1%80%D0%B2%D0%B8%D0%BD.png)
Nikolai A. Dobronravin – Doctor of Science, professor at the Saint-Petersburg State University Mail: iberorus@iberorus.spbu.ru
Nikolai A. Dobronravin – Doctor of Science, professor at the Saint-Petersburg State University Mail: iberorus@iberorus.spbu.ru