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Open Access
|Dec 2019

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DOI: https://doi.org/10.2478/ers-2019-0040 | Journal eISSN: 2451-182X | Journal ISSN: 2083-3725
Language: English
Page range: 456 - 470
Submitted on: Nov 1, 2018
Accepted on: Sep 1, 2019
Published on: Dec 26, 2019
Published by: John Paul II University of Applied Sciences
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2019 Włodzimierz Wójcicki, published by John Paul II University of Applied Sciences
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.