TY - BOOK AU - Gray,N.F. TI - Drinking water quality: problems and solutions SN - 0471948179 AV - TD257 G73 1994 U1 - 628.1/0941 20 PY - 1994/// CY - Chichester PB - J. Wiley KW - Agua potable KW - Gran BretaƱa KW - Calidad del agua KW - Agua KW - Contaminacion N1 - Includes bibliographical references (p. [298]-309) and index ER -