Natthawan Likitmongkonsakun และ Tawan Limpiyakorn. (2008) Effect of organic matters in wastewaters on degradation of 17α-ethynylestradiol by nitrifying activated sludge containing ammonia-oxidizing bacteria. Chulalongkorn University:ม.ป.ท.Natthawan Likitmongkonsakun และ Tawan Limpiyakorn. 2008. Effect of organic matters in wastewaters on degradation of 17α-ethynylestradiol by nitrifying activated sludge containing ammonia-oxidizing bacteria. ม.ป.ท.:Chulalongkorn University;Natthawan Likitmongkonsakun และ Tawan Limpiyakorn. Effect of organic matters in wastewaters on degradation of 17α-ethynylestradiol by nitrifying activated sludge containing ammonia-oxidizing bacteria. ม.ป.ท.:Chulalongkorn University, 2008. Print.