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YouTube - How Many Lightbulbs?
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www.youtube.com/watch
U116
energy
power
lightbulbs
shared by
Rob Parsons
on 10 Nov 09
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BBC News - Why eco-light bulbs aren't what they seem
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news.bbc.co.uk/...8406923.stm
lightbulbs
shared by
Rob Parsons
on 17 Dec 09
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