Title: Rāingān sathānakān khunnaphāp singwǣtlō̜m pī 2550, phāk thī 9, Lumnam Khōng
Description: Reports on environmental conditions of Loei, Udon Thani, Nong Khai, Sakon Nakhon, and Nakhon Phanom Provinces of Norteastern Thailand, 2007.