"Thailand's railway system" . . . "1897" . . . "Isan Railway Line" . . . . . "a line was opened" . . . "Nong Khai\u2013Bangkok" . "northeastern railway" . . . "Northeastern Line" . "Northern Line" . . "northeastern line" . . "railway" . . . . . "Northeastern Railway Lines" . "spur line" . "Northeastern Line" . "Northeastern Line (Thailand)" . "Northern Line" . "Northeastern Main Line" . "SRT Northeastern Line" . "1897-03-26" . "1896" . "Operational" . . "Northeastern Railway Line" . "Northeastern Railway" . "Northeastern Line (Thailand)" . "Nong Khai\u2013Thanaleng railway" . "Northeastern line" . . "northeastern railway line" . . "train" . .