Chutathip Chareonlarp. (1991) The Study on capability of peat as cation exchanger. Mahidol University,:ม.ป.ท.Chutathip Chareonlarp. 1991. The Study on capability of peat as cation exchanger. ม.ป.ท.:Mahidol University,;Chutathip Chareonlarp. The Study on capability of peat as cation exchanger. ม.ป.ท.:Mahidol University, 1991. Print.