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Inside Back Cover Pocket
Seven deadly Sins on the back
toxic heavy metals
There's lots of good history associated with this image
Light Bulb Rompers for Babies Australia HOME Inside Back Cover PocketIt is ironic that an "innovation" as iconic as the invention of the light bulb should be so shrouded in authorship controversy. Contrary to popular belief, the first electric light was made, not by Thomas Alva Edison, but by the English physicist Sir Joseph Wilson Swan. Swan had been determined to devise a practical, long lasting electric light. He found that a carbon paper filament worked well, but burned up quickly. In 1878, he demonstrated his new