PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Animal wastes are a major source of nutrient enrichment of streams from run-off from dairies (Willcock et al., 1999) and therefore groundwater quality has become a major concern, particularly because of salt and nitrate leaching, often demonstrated by intense agricultural activities (Mohammad and Kaluarachchi, 2004).
http://www.w3.org/ns/prov#wasQuotedFrom
  • scielo.org.za