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Light-emitting diode - Wikipedia
Demonstration Assessment of Light-Emitting Diode (LED) Parking Lot Lighting at T.J.Maxx in Manchester, NH Phase I - UNT Digital Library
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Light-Emitting Diodes (LEDs) - learn.sparkfun.com
Replacement Processes for Light Emitting Diode (LED) Traffic Signals |The National Academies Press
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LED: Basics, Working, Interfacing, and Application | DIY Tutorials
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Light-emitting diode - Wikipedia
Light Emitting Diodes
