<http://webisa.webdatacommons.org/10561991>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<slideshare.net> .
<http://webisa.webdatacommons.org/10561991>	<http://www.w3.org/ns/prov#value>	"Importance of Rainwater Harvesting in Human Health C.S. Weeraratna* & Tanuja Ariyananda** Lanka Rainwater Harvesting Forum, Subadrarama Lane, Nugegoda, Sri Lanka, (E-mail : * csweera@sltnet.lk and ** tanuja@sltnet.lk)Water used for drinking and other purposes may contain elements such as arsenic, cadmium or anionssuch as fluoride, and nitrates at toxic levels." .
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<http://webisa.webdatacommons.org/prov/437847396>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/10561991> .