<?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">terpene</topic></authority><related type="narrower"><topic>dipentene</topic></related><related type="narrower"><topic>pine oil</topic></related><related type="narrower"><topic>turpentine</topic></related><related type="narrower"><topic>lithotine</topic></related><related type="broader"><topic>solvent by composition or origin</topic></related> <note xml:lang="en"><![CDATA[ Generally, a class of hydrocarbons found  in the volatile oils of plants, especially the coniferous and aurantiaceous orders. Most  common is the chief constituent of turpentine, pinene. ]]></note></mads>