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题名 Basic maintenance of rectangular secondary clarifiers.

出版资料	Alexandria, VA : Water Environment Federation, 1993.

馆藏地	索书号	处理状态
IU Medical 1st Floor		AVAILABLE

载体形态	vii, 42 p. : ill. ; 28 cm.
主题	Sewage.
	Waste Disposal, Fluid -- methods.
Note	At head of title: Problem-related operations-based education