Prangthong Maneesri. (1991) Some factors influencing hepatitis B virus infection of school-age children in Din-Daeng community, Bangkok. Mahidol University,:ม.ป.ท.Prangthong Maneesri. 1991. Some factors influencing hepatitis B virus infection of school-age children in Din-Daeng community, Bangkok. ม.ป.ท.:Mahidol University,;Prangthong Maneesri. Some factors influencing hepatitis B virus infection of school-age children in Din-Daeng community, Bangkok. ม.ป.ท.:Mahidol University, 1991. Print.