File:Light bulb energy efficient-mini.jpg
From David Spencer's Education Paragon: Helping students develop citizenship, faith, literacy, responsibility and vision
Light_bulb_energy_efficient-mini.jpg (48 × 48 pixels, file size: 946 B, MIME type: image/jpeg)
energy efficient lightbulb
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|current||01:40, 24 December 2009||48 × 48 (946 B)||DavidMRDSpencer||energy efficient lightbulb|
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