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. NodelijkSocially responsible animal disease control : proceedings 23rd annual meeting held on 25 November 2010, Central Veterinary Institute, Lelystad / Dutch Society for Veterinary Epidemiology and Economics VEEC ; ed.: A. Dekker and G. NodelijkProcessen en factoren die van invloed zijn op de emissie van bio-aerosolen uit stallen / A.J.A. Aarnink, Y. Zhao, A. Dekker, N.W.M. Ogink