Authors
Pleban Dariusz
Central Institute for Labour Protection – National Research Institute, Warsaw, Poland
Mikulski Witold
Central Institute for Labour Protection – National Research Institute, Warsaw, Poland
© 2018 Pleban Dariusz, Mikulski Witold, published by Slovak University of Technology in Bratislava
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.