TY - BOOK AU - Gray N F TI - Water technology: an introduction for environmental scientists and engineers SN - 8176491535 (pbk) U1 - H4224, N9 PY - 1999/// CY - New Delhi PB - Viva Books Private Limited KW - Underground water KW - Water KW - Geology N1 - Includes bibliographical references; Index 538-548p ER -