Yessentuki TyletsValeryG. Stavropol State Pedagogical Institute in Yessentuki (branch), Stavropol Territory, Essentuki, St. Rose Valley, 7 valerytylets@yandex.ru Read more about Tylets Valery G. KrasnyanskayaTatianaM. Stavropol State Pedagogical Institute in Yessentuki (branch), Stavropol Territory, Essentuki, St. Rose Valley, 7 ktm8@yandex.ru Read more about Krasnyanskaya Tatiana M.
