Language: English
Page range: 107 - 111
Submitted on: Oct 20, 2016
Accepted on: Nov 12, 2016
Published on: Dec 23, 2016
Published by: Pedagogical University of Cracow
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year
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© 2016 Kazimierz Rajchel, Jerzy Szczęsny, published by Pedagogical University of Cracow
This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 License.