Almaty Khvan N.V. National Science Practical, Educational and Health Center «Bobek», Almaty, Kazakhstan n.khvan@rambler.ru Read more about N. V. Khvan TakhanovaRakhimaS. Almaty Academy of Economy and Statistics, Zhandosova str. 59, Almaty 050035, Kazakhstan Rakhima2007@mail.ru Read more about Takhanova Rakhima S.
