Orathai Leelhaphunt. (1986) Effects of water hardness and water temperature on toxicity of detergents to giant freshwater prawns, Macrobrachium rosenbergii de man. Mahidol University,:ม.ป.ท.Orathai Leelhaphunt. 1986. Effects of water hardness and water temperature on toxicity of detergents to giant freshwater prawns, Macrobrachium rosenbergii de man. ม.ป.ท.:Mahidol University,;Orathai Leelhaphunt. Effects of water hardness and water temperature on toxicity of detergents to giant freshwater prawns, Macrobrachium rosenbergii de man. ม.ป.ท.:Mahidol University, 1986. Print.