00697cam a2200217 7i4500 0000012030 20150521090000.0 20150521084955.0 150521 0889365466 NM TD370 .S43 1988 Searching : IDRC 1988 : IDRC 1988 : fresh water the human imperative by International Development Research Centre. Ottawa: International Development Research Centre, 1988. 40p.: col.ill.; 25cm.. Water quality Water supply Drinking water NM /article-images/<file name including ext.> BP00003101 Book Open Shelf HQ Library