TY - BOOK ED - United Nations. TI - Groundwater quality and monitoring in Asia and the Pacific T2 - Water resources series SN - 9211195950 SN - 0082-8130 PY - 1991/// CY - New York PB - United Nations KW - WATER QUALITY KW - GROUNDWATER KW - MONITORING KW - ASIA KW - PACIFIC OCEAN ER -