About this article
Published Online: Apr 16, 2018
Page range: 16 - 19
DOI: https://doi.org/10.2478/ped21-2018-0003
Keywords
© 2018 Salidin Kaldybaev, published by De Gruyter Open
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Kaldybaev, Salidin
Ala-Too International University