<![CDATA[Science Library DSS Search for 'su,wrdl: "Water Purification."' with limit(s): 'su-to:Sewage su-to:Water su-to:Factory and trade waste su-to:Factory and trade waste']]> http://library.dss.go.th/cgi-bin/koha/opac-search.pl?idx=su&q=%22Water%20Purification.%22&limit=su-to%3ASewage&limit=su-to%3AWater&limit=su-to%3AFactory%20and%20trade%20waste&limit=su-to%3AFactory%20and%20trade%20waste&format=rss2 10 0 50