Authors
Devi Shonia
Sokhumi State University, Tbilisi
© 2021 Dariusz Michał Trzmielak, Devi Shonia, Magdalena Skoneczna, published by ŁUKASIEWICZ RESEARCH NETWORK – INSTITUTE OF AVIATION
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.