TY - BOOK AU - Letterman,Raymond D. ED - American Water Works Association. TI - Water quality and treatment: a handbook of community water supplies SN - 0070016593 AV - 628.1221 W324 1999 PY - 1999/// CY - New York PB - McGraw-Hill KW - Water KW - Purification KW - United States KW - Water quality KW - Water-supply ER -