题名 Keep it clean : highlights of Bethlehem's pollution control program.

出版资料	[Bethlehem, Pa, 1970]

复本

馆藏地	索书号	处理状态
IU 3rd Floor	TD897 .B44	AVAILABLE

载体形态	32 p : col. illus ; 29 cm.
Notes	Cover title.
主题	Factory and trade waste -- Environmental aspects -- Pennsylvania -- Bethlehem.
	Sewage -- Purification.