Authors
University of Silesia in Katowice, Faculty of Natural Sciences, Institute of Social and Economic Geography and Spatial Management, Sosnowiec, Poland
Krzysztof Soida
PKP CARGO S.A., Katowice, Poland
© 2022 Robert Krzysztofik, Weronika Dragan, Krzysztof Soida, published by University of Silesia in Katowice, Faculty of Natural Sciences
This work is licensed under the Creative Commons Attribution 4.0 License.