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Light sources
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-- See Also the narrower term Lamps
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-- See Also the narrower term Lasers
--subdivision Effect of lasers on under individual materials and types of materials, e.g. Metals--Effect of lasers on
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--subdivision Lighting under types of vehicles, structures, buildings, rooms, installations, etc., e.g. Factories--Lighting
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-- See Also the narrower term Sun
--headings beginning with the word Solar
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