Jopkiewicz, Andrzej
Nowak, Stanisław Bogdan
Jopkiewicz, Agata Maria
Lelonek, Magdalena
Funding for this research was provided by:
Kazimierz Pulaski University of Technology and Humanities in Radom
Article History
Accepted: 16 April 2020
First Online: 16 May 2020
Compliance with Ethical Standards
:
: There are no conflicts of interest.