Lofjle, E.; Kubiniok, J. Landform development and bioturbation on the Khorat plateau, Northeast Thailand, Nat.Hist.Bull.Siam Soc. (56), 1996 "Archived copy"(PDF). Archived from the original(PDF) on 2011-07-21. Retrieved 2010-12-23.{{cite web}}: CS1 maint: archived copy as title (link)
Lofjle, E.; Kubiniok, J. Landform development and bioturbation on the Khorat plateau, Northeast Thailand, Nat.Hist.Bull.Siam Soc. (56), 1996 "Archived copy"(PDF). Archived from the original(PDF) on 2011-07-21. Retrieved 2010-12-23.{{cite web}}: CS1 maint: archived copy as title (link)
