Authors
Krzysztof Jabłoński
Poznań University of Life Sciences, Department of Forest Technology, Poznań, Poland
Włodzimierz Stempski
Poznań University of Life Sciences, Department of Forest Technology, Poznań, Poland
© 2018 Krzysztof Jabłoński, Włodzimierz Stempski, published by Forest Research Institute
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.