Polish Journal of Veterinary Sciences
Polish Journal of Veterinary Sciences > 2008 > 11 > 3 > 219-223
Polish Journal of Veterinary Sciences > 2009 > 12 > 2 > 189-193
Polish Journal of Veterinary Sciences > 2009 > 12 > 2 > 159-167
Polish Journal of Veterinary Sciences > 2010 > 13 > 1 > 129-135