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Ultra efficient | Philips lighting
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E14 2835 LED Corn Bulb 1.5W Capsule light Replace Halogen Bulbs Energy Saving UK | eBay
Energy-saving LED lightbulbs fitted for free in council homes - labm
Government ends free energy saving light bulbs scheme
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EU states clash over use of toxic mercury in light bulbs | Environment | The Guardian
Lightbulbs excluded in EU regulations on energy efficiency claims | Energy efficiency | The Guardian