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Pierre Calleja inspects a prototype street lamp in his lab | Inhabitat - Green Design, Innovation, Architecture, Green Building
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Pierre Calleja…French Biochemist…A Mind Boggling Invention…Contributed by Sheela Gidwani – 10 Secrets to a Balanced, Successful & Happy Life
The most incredible & simple invention that will change our future !!! French biochemist Pierre Calleja has basically developed a lighting system that... | By Subbu Electricals | Facebook
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