Authors
Language: English
Page range: 6 - 9
Submitted on: Nov 10, 2018
Accepted on: Feb 11, 2019
Published on: Jun 3, 2019
Published by: University of Physical Education in Warsaw
In partnership with: Paradigm Publishing Services
Publication frequency: Volume open
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© 2019 Roland Renson, published by University of Physical Education in Warsaw
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.