Timtong Darunsontaya และ Anchalee Suddhiprakarn. (2011) The mineralogy of upland agricultural soils under tropical monsoonal environment in Thailand. Kasetsart University,:ม.ป.ท.Timtong Darunsontaya และ Anchalee Suddhiprakarn. 2011. The mineralogy of upland agricultural soils under tropical monsoonal environment in Thailand. ม.ป.ท.:Kasetsart University,;Timtong Darunsontaya และ Anchalee Suddhiprakarn. The mineralogy of upland agricultural soils under tropical monsoonal environment in Thailand. ม.ป.ท.:Kasetsart University, 2011. Print.