Kyaw Ngwe และ Irb Kheoruenromne. (2012) Potassium chemistry in paddy soils under tropical savanna climate. Kasetsart University:ม.ป.ท.Kyaw Ngwe และ Irb Kheoruenromne. 2012. Potassium chemistry in paddy soils under tropical savanna climate. ม.ป.ท.:Kasetsart University;Kyaw Ngwe และ Irb Kheoruenromne. Potassium chemistry in paddy soils under tropical savanna climate. ม.ป.ท.:Kasetsart University, 2012. Print.