학위논문(석사) - 한국과학기술원 : 생명화학공학과, 2008.2, [ x, 55 p ]
wastewater; activated sludge; packed-bed; 폐수; 활성슬러지; 충진탑; wastewater; activated sludge; packed-bed; 폐수; 활성슬러지; 충진탑
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