1. International red meat trade
2. Carlson, A. R. and Blaha, T. Investigations into the Infection-Contamination-Infection Cycle of Zoonotic Salmonella on Swine Farms: Investigation into the Occurrence ofSalmonellaon 25 Selected Minnesota Swine Farms. Proceedings of the 3rd International Symposium on the Epidemiology and Control of Salmonella in Pork. August5–71999, Washington, DC. http://www.isecsp99.org