Sumagit, Abigail Castillo Knowledge on influenza A (H1N1) among students in the University of Northern Philippines / Abigail Castillo Sumagit. - Vigan City : [s.n.], 2011. - xiv, 73 pages : colored illustration ; 28 centimeter. Bibliography: pages 66-67. Subjects--Topical Terms: Viruses. Dewey Class. No.: TH 579.2 Su6k 2011