Pubblicato online: 22 dic 2018
Pagine: 303 - 312
DOI: https://doi.org/10.2478/mgrsd-1988-030138
© 2018 Mirosława Czerny, Jerzy Makowski, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
Mirosława Czerny
Jerzy Makowski