the greenhouse effect

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  Air Pollution: Sources & Effects

  
  
  This film, made in 1976, part of the Air Pollution series looks at sources of air pollution in the United Kingdom.
    £19.50 ideo on DemandBuy DVD
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  Air Pollution: The Science of the Situation

  
  
  This film, made in 1976, part of the Air Pollution series looks at the science behind the problems and possible solutions to them from a British perspective.
    £19.50 ideo on DemandBuy DVD