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Swap Your Conventional Light Bulbs for LEDs at No Charge! | Sustainability | Washington University in St. Louis
It's lights out for incandescent bulbs. Did anyone even notice? - Los Angeles Times
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Leading the world in lighting efficiency lightens the load on energy bills - GOV.UK
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Efficacy of Light Bulbs | EGEE 102: Energy Conservation and Environmental Protection
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Comparison of Energy-Efficient Bulbs | DelMarFans.com | DelMarFans.com
