Cover photo: “big_blue” by Max Iter (Retrieved from www.f lickr.com)

Copy editing: Gabriela Marszołek
Proofreading: Joanna Zwierzyńska

Typesetting: Marek Zagniński

Electronic version is the original one. 
The journal was previously published in printed form with the 

ISSN 2450-5455
The journal is distributed free of charge

ISSN 2451-2125

Published by
Wydawnictwo Uniwersytetu Śląskiego

ul. Bankowa 12B, 40-007 Katowice
www.wydawnictwo.us.edu.pl
e-mail: wydawus@us.edu.pl

First impression. Printed sheets: 13.0. Publishing sheets: 14.5.

https://creativecommons.org/licenses/by/2.0/
https://creativecommons.org/licenses/by/2.0/