Cover photo: “big_blue” by Max Iter (Retrieved from www.f lickr.com) Copy editing: Gabriela Marszołek Proofreading: Joanna Zwierzyńska Typesetting: Barbara Wilk Translation of summaries into German: Magdalena Podraza Copyright © 2018 by Wydawnictwo Uniwersytetu Śląskiego All rights reserved ISSN 2450-5455 (print edition) ISSN 2451-2125 (digital edition) Published by Wydawnictwo Uniwersytetu Śląskiego ul. Bankowa 12B, 40-007 Katowice www.wydawnictwo.us.edu.pl e-mail: wydawus@us.edu.pl First impression. No. of copies: 50 + 20. Printed sheets: 9.25. Publishing sheets: 10.5. Offset paper grade, 90 g. Price 20 zł (+ VAT) Printing and binding Volumina.pl Daniel Krzanowski ul. Księcia Witolda 7–9, 71-063 Szczecin