2218-3620 2218-3620 S2218-36202020000600404 Azerbaijan 00 12 2020 00 12 2020 12 6 404 410

2007 Belarus. Ministry of Education 2017 2011 4 52-62 2014 6 2015 Chelyabinsk, Russain Federation 2017 4 4 4 370-2 Russian Federation. Ministry of Education and Science 2010 2015 9 46-7 Ukraine. Ministry of Education 2018 2017 5 474-7 2014 101 11-3