<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">sodium lamps</topic></authority><related type="narrower"><topic>high-pressure sodium lamps</topic></related><related type="narrower"><topic>low-pressure sodium lamps</topic></related><related type="broader"><topic>high-intensity discharge lamps</topic></related><variant type="other"><topic>lamps, sodium</topic></variant><variant type="other"><topic>sodium lamp</topic></variant><variant type="other"><topic>sodium-vapor lamps</topic></variant> <note xml:lang="en"><![CDATA[ High-intensity discharge lamps, highly efficient in terms of lumens produced per watt of current consumed, with one-color light (orange) making them unsuitable for general use; often used for street and highway lighting. ]]></note></mads>