Sombat Yumuang. 2005. Evaluation of potential for 2001 debris flow and debris flood in the vicinity of Nam Ko area, Amphoe Lom Sak, Changwat Phetchabun, Central Thailand. Field of Study Geology, Chulalongkorn University;
Sombat Yumuang. (2005) Evaluation 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/Bangkok.
Sombat Yumuang. Evaluation of potential for 2001 debris flow and debris flood in the vicinity of Nam Ko area, Amphoe Lom Sak, Changwat Phetchabun, Central Thailand. . Bangkok:Chulalongkorn University, 2005.
Sombat Yumuang. (2005) Evaluation 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/Bangkok.