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Sylvania 67504 LU70/MED | HID High Pressure Sodium Lamp | CityLightsUSA.com
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Sodium-vapor lamp - Wikipedia
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C70S62/M Medium Base High Pressure Sodium Lamp - LED Lighting Space
LU70-MOGUL High Pressure Sodium Lamp - AAMSCO Lighting
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What are High Pressure Sodium Light Bulbs? from Commercial Lighting Experts.
Sodium-vapor lamp - Wikipedia
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Lighting Comparison: LED vs High Pressure Sodium/Low Pressure Sodium
Ushio LU-250, ED18 LU High Pressure Sodium Lamp 5001138 B&H
OSRAM Sylvania GIDDS-685605 Lumalux High Pressure Sodium Lamp, E17, 50W, 52V, E26 Medium, Clear, Universal Burn, 2.5" x 2.25" x 5.75" - - Amazon.com
1000Watt High pressure sodium mog base lamp
Osram 281179 - High Pressure Sodium Light Bulb | LightBulbs.com
Sodium-vapour lamp | instrument | Britannica
Sodium-vapor lamp - Wikipedia
Sunlite 03620-SU | LU150/MED | 150 Watt ED17 2100K
Sodium | Elements | RSC Education
