A comparison between 1960 and today's lighting! – MMA Lighting Consultancy
Euro Photovoltaic India - Solar SOX Street Lights
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Survey of street lights in BS8
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Electricity - A 1970s Flashback - Rob's '42'
soxlamps.org
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History of low-pressure sodium lighting
Old street lamps against grey sky with overhead power lines wires, first lamp post is a decades old concrete type with SOX lamp, Glasgow Scotland UK Stock Photo - Alamy
Low Pressure Sodium fixtures and sox lamps | Facebook
SOX lamps: Lighting-up data
SOX Street Light
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Bright idea: transforming Ghana with street lights | Working in development | The Guardian
West/East Sussex Street Lighting
File:SOX lamps (not my image) - Coppermine - 19716.jpg - Roader's Digest: The SABRE Wiki
Street lighting installation | Lighting contractors | E.ON