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<http://webisa.webdatacommons.org/187657200>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<nursingdegreeguide.org> .
<http://webisa.webdatacommons.org/187657200>	<http://www.w3.org/ns/prov#value>	"U.S. government regulations permit sludge to be used on conventional farms despite concerns about contamination by high levels of heavy minerals, dioxins and other chemicals from industrial and commercial." .
<http://webisa.webdatacommons.org/prov/104463814>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/187657200> .