Supanat Boonyapisitsopa และผู้แต่งคนอื่นๆ. (2013) SURVEY OF INFLUENZA A VIRUSES IN FREE-GRAZING DUCKS IN LOWER NORTHERN PART OF THAILAND. Chulalongkorn University:ม.ป.ท.Supanat Boonyapisitsopa และผู้แต่งคนอื่นๆ. 2013. SURVEY OF INFLUENZA A VIRUSES IN FREE-GRAZING DUCKS IN LOWER NORTHERN PART OF THAILAND. ม.ป.ท.:Chulalongkorn University;Supanat Boonyapisitsopa และผู้แต่งคนอื่นๆ. SURVEY OF INFLUENZA A VIRUSES IN FREE-GRAZING DUCKS IN LOWER NORTHERN PART OF THAILAND. ม.ป.ท.:Chulalongkorn University, 2013. Print.