1997 · M. J. M. Tielen, F. W. van Schie, et al. · International Conference on the Epidemiology and Control of Biological, Chemical and Physical Hazards in Pigs and Pork · 9
1999 · P. J. van der Wolf, F. W. van Schie, et al. · International Conference on the Epidemiology and Control of Biological, Chemical and Physical Hazards in Pigs and Pork · 6
1997 · P. J. van der Wolf, W. B. Wolbers, et al. · International Conference on the Epidemiology and Control of Biological, Chemical and Physical Hazards in Pigs and Pork · 6
1999 · P. J. van der Wolf, W. B. Wolbers, et al. · International Conference on the Epidemiology and Control of Biological, Chemical and Physical Hazards in Pigs and Pork · 1