Naphong Satiropas. (1990) Treatability study of hospital wastewaters case study : Siriraj hospital. Mahidol University,:ม.ป.ท.Naphong Satiropas. 1990. Treatability study of hospital wastewaters case study : Siriraj hospital. ม.ป.ท.:Mahidol University,;Naphong Satiropas. Treatability study of hospital wastewaters case study : Siriraj hospital. ม.ป.ท.:Mahidol University, 1990. Print.