<?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://roble.intecca.uned.es/tematres/lem/">Recursos energéticos</topic></authority><related type="narrower"><topic>Energía nuclear</topic></related><related type="narrower"><topic>Recursos energéticos marítimos</topic></related><related type="narrower"><topic>Recursos energéticos renovables</topic></related><related type="other"><topic>Recursos naturales</topic></related><related type="other"><topic>Industria energética</topic></related><related type="other"><topic>Consumo de energía</topic></related><related type="other"><topic>Combustibles</topic></related><related type="other"><topic>Energía</topic></related><related type="other"><topic>Política energética</topic></related><variant type="other"><topic>Energía-Recursos</topic></variant><variant type="other"><topic>Sistemas energéticos</topic></variant><variant type="other"><topic>Fuentes de energía</topic></variant> <note xml:lang="es"><![CDATA[ Úsase para obras sobre las fuentes disponibles de energía mecánica. Para obras sobre la energía desde los puntos de vista físico y de la ingeniería, véase: Energía mecánica ]]></note></mads>