Authors
Andrzej Klimek
University of Science and Technology, Faculty of Animal Breeding and Biology, Bydgoszcz, Poland
Bogusław Chachaj
University of Science and Technology, Faculty of Animal Breeding and Biology, Bydgoszcz, Poland
© 2018 Andrzej Klimek, Bogusław Chachaj, published by Forest Research Institute
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.