Mongkolchai Assawadithalerd และ Chantra Tongcumpou. (2009) Effect of organic fertilizer and potassium hydroxide addition on cadmium bioavailability in paddy soil. Chulalongkorn University:ม.ป.ท.Mongkolchai Assawadithalerd และ Chantra Tongcumpou. 2009. Effect of organic fertilizer and potassium hydroxide addition on cadmium bioavailability in paddy soil. ม.ป.ท.:Chulalongkorn University;Mongkolchai Assawadithalerd และ Chantra Tongcumpou. Effect of organic fertilizer and potassium hydroxide addition on cadmium bioavailability in paddy soil. ม.ป.ท.:Chulalongkorn University, 2009. Print.