Authors
Ewa Zaraś Januszkiewicz
ewa_zaras_januszkiewicz@sggw.edu.pl
Warsaw University of Life Sciences, Poland
ewa_zaras_januszkiewicz@sggw.edu.pl
© 2020 Ewa Zaraś Januszkiewicz, published by Slovak University of Agriculture in Nitra
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.