6 Structure of a high-pressure sodium vapor lamp | Download Scientific Diagram
LU150-MEDIUM High Pressure Sodium Lamp | AAMSCO Lighting
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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
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Sylvania 69519 - SOX180 Low Pressure Sodium Light Bulb - Walmart.com
Sylvania LU400/ECO 400w Lumalux High Pressure Sodium Light Bulb – BulbAmerica
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GE 150 Watt High Pressure Sodium Lamp 13252 LU150/MED/ECO [Lot of 2] NOS | eBay
The Sodium Lamp - How it works and history
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