http://nakhonsawan2001.tripod.com/untitled/history.ht
http://blog.eduzones.com/offy/5050
http://www.baanmaha.com/community/thread40220.html
http://www.prapayneethai.com/th/amusement/north/view.asp?id=0359
http://www.taklong.com/landscape/s-la.php?No=48694