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DOI: https://doi.org/10.2478/ers-2020-0033 | Journal eISSN: 2451-182X | Journal ISSN: 2083-3725
Language: English
Page range: 452 - 460
Submitted on: Jul 1, 2020
Accepted on: Oct 1, 2020
Published on: Dec 31, 2020
Published by: John Paul II University of Applied Sciences
In partnership with: Paradigm Publishing Services
Publication frequency: 4 times per year

© 2020 Sebastian Krasuski, published by John Paul II University of Applied Sciences
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.