<?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">photochemists</topic></authority><related type="other"><topic>photochemistry</topic></related><related type="broader"><topic>chemists</topic></related><variant type="other"><topic>photochemist</topic></variant><variant type="other"><topic>photochemist&apos;s</topic></variant><variant type="other"><topic>photochemists&apos;</topic></variant> <note xml:lang="en"><![CDATA[ Scientists who specialize in the branch of chemistry that deals with the chemical effects of radiation, chiefly visible and ultraviolet light, and with the direct production of radiation by chemical changes. ]]></note></mads>