Authors
Małgorzata Pomorska-Mól
Department of Swine Diseases, National Veterinary Research Institute, Pulawy, Poland
Zygmunt Pejsak
Department of Swine Diseases, National Veterinary Research Institute, Pulawy, Poland
© 2015 Małgorzata Pomorska-Mól, Zygmunt Pejsak, published by National Veterinary Research Institute in Pulawy
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.