Education in the United States: A Brief Overview -- 2005 ...

Public Water supplies of the 100 largest cities of the United States, 1962. USGS. Water Supply Paper No.1812, Washington. Emeric, R.J. 1974. Consequences of high nitrate levels in feed and water supplies. Federation Proceedings. 33: 1183. Environmental Protection Agency, Water Supply Division (EPA). 1975. Manual of Industrial Water Supply Systems. ................
................