Rattana Liawsakul และ Ratana Somrongthong. (2007) Perceptions and health behaviors toward avian influanza among backyard poultry farmers at Suantaeng sub-district, Muang district, Suphan Buri province. Chulalongkorn University:ม.ป.ท.Rattana Liawsakul และ Ratana Somrongthong. 2007. Perceptions and health behaviors toward avian influanza among backyard poultry farmers at Suantaeng sub-district, Muang district, Suphan Buri province. ม.ป.ท.:Chulalongkorn University;Rattana Liawsakul และ Ratana Somrongthong. Perceptions and health behaviors toward avian influanza among backyard poultry farmers at Suantaeng sub-district, Muang district, Suphan Buri province. ม.ป.ท.:Chulalongkorn University, 2007. Print.