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GE LIGHTING 400W, ED28 High Pressure Sodium HID Light Bulb: High Intensity Discharge Bulbs: Amazon.com: Tools & Home Improvement
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Technical Precision 250W HPS Bulb High Pressure Sodium Light Bulb Replacement for Philips C250S50 Light Bulb ED18 High Intensity Discharge Bulb with E39 Mogul Screw Base - Clear - 120V - 1 Pack - - Amazon.com
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low pressure sodium lamp (yellow) vs. high pressure sodium lamp | Led street lights, Led parking lot lights, Street light
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