© 2017 Monika Szymańska-Czerwińska, Agata Mitura, Kinga Zaręba, Christiane Schnee, Andrzej Koncicki, Krzysztof Niemczuk, published by National Veterinary Research Institute in Pulawy
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.