PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A joint research carried out by the Sharif University of Technology and the Air Quality Control Organization shows that 90% of Tehran???s air pollution is produced by traffic and the remaining 10% by stationary sources including residential dwellings, power plants, and industrial complexes such as the Tehran refinery.
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  • payvand.com