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![Comparison between high pressure sodium vapor lamp and LED [18] | Download Scientific Diagram](https://www.researchgate.net/publication/349678208/figure/tbl1/AS:996243916480513@1614534467273/Comparison-between-high-pressure-sodium-vapor-lamp-and-LED-18.png "Comparison between high pressure sodium vapor lamp and LED [18] | Download Scientific Diagram")
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