Editorial Article Sidebar pdf (Język Polski) Published: Dec 30, 2021 DOI: https://doi.org/10.18290/rped21134.1 This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. Main Article Content Danuta Opozda The John Paul II Catholic University of Lublin Article Details Issue Vol 13 No 4 (2021) Section Editorials