Authors
Franciszek Kłosowski
franciszek.klosowski@us.edu.pl
Institute of Social and Economic Geography and Spatial Management, University of Silesia in Katowice, Sosnowiec, Poland
franciszek.klosowski@us.edu.pl
© 2019 Franciszek Kłosowski, published by University of Silesia in Katowice, Faculty of Natural Sciences
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.