Thongley Thongley และ Chaiwiwat Vansarochana. (2021) Landslide susceptibility assessment using frequency ratio model at Ossey watershed area in Bhutan. <i>Engineering and Applied Science Research</i>, <i>48</i>(1), 56-64.Thongley Thongley และ Chaiwiwat Vansarochana. "Landslide susceptibility assessment using frequency ratio model at Ossey watershed area in Bhutan". Engineering and Applied Science Research 48 (2021):56-64.Thongley Thongley และ Chaiwiwat Vansarochana. Landslide susceptibility assessment using frequency ratio model at Ossey watershed area in Bhutan. Faculty of Engineering, Khon Kaen University:ม.ป.ท. 2021.