Authors
Hynek Böhm
Institute of Political and Administrative Sciences, University of Opole, Opole, Poland
Department of Geography, Faculty of Science, Humanities and Education, Technical University of Liberec, Liberec, Czech Republic
© 2021 Hynek Böhm, published by Czech Academy of Sciences, Institute of Geonics
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.