Download the full article as a PDF file.
© 2022 Sholpan A. Kulzhanova, Maiya E. Konkayeva, Zauresh K. Smagulova, Nazira N. Beisenbieva, Gulnara T. Tuleshova, Aigul M. Utegenova, Gulsimzhan O. Turebaeva, Gaukhar A. Nurakhmetova, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.