Freedom of disease : proceedings 18th Annual Meeting held on 16 February 2006 Animal Sciences Group, ASG-Lelystad and Central Institute for Animal Disease Control, CIDC-Lelystad / Dutch Society for Veterinary Epidemiology and Economics VEEC ; ed.: A. Dekker and G. Nodelijk

Freedom of disease : proceedings 18th Annual Meeting held on 16 February 2006 Animal Sciences Group, ASG-Lelystad and Central Institute for Animal Disease Control, CIDC-Lelystad / Dutch Society for Veterinary Epidemiology and Economics VEEC ; ed.: A. Dekker and G. Nodelijk