Kobkan Panphong และ Santi Chaisrisawatsuk. (2020) Scale economies and the potential gain from local amalgamation in Thailand. National Institute of Development Administration:ม.ป.ท.Kobkan Panphong และ Santi Chaisrisawatsuk. 2020. Scale economies and the potential gain from local amalgamation in Thailand. ม.ป.ท.:National Institute of Development Administration;Kobkan Panphong และ Santi Chaisrisawatsuk. Scale economies and the potential gain from local amalgamation in Thailand. ม.ป.ท.:National Institute of Development Administration, 2020. Print.