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Faculty of Engineering and Economics, Wroclaw University of Economics, Wroclaw, Poland |
CORRESPONDING AUTHOR
Arkadiusz Piwowar
Wrocław University of Economics, ul. Komandorska 118/120, 53-345 Wrocław, Poland
Submission date: 2018-03-13
Final revision date: 2018-06-07
Acceptance date: 2018-06-12
Online publication date: 2019-03-04
Publication date: 2019-04-09
Pol. J. Environ. Stud. 2019;28(4):2785–2792