Sombat Yumuang และผู้แต่งคนอื่นๆ. (2005) Evalution of potential for 2001 debris flow and debris flood in the vicinity of Nam Ko area, Amphoe Lom Sak Changwat Phetchabun, Central Thailand. Chulalongkorn University:ม.ป.ท.Sombat Yumuang และผู้แต่งคนอื่นๆ. 2005. Evalution of potential for 2001 debris flow and debris flood in the vicinity of Nam Ko area, Amphoe Lom Sak Changwat Phetchabun, Central Thailand. ม.ป.ท.:Chulalongkorn University;Sombat Yumuang และผู้แต่งคนอื่นๆ. Evalution of potential for 2001 debris flow and debris flood in the vicinity of Nam Ko area, Amphoe Lom Sak Changwat Phetchabun, Central Thailand. ม.ป.ท.:Chulalongkorn University, 2005. Print.