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mads.xsd"><authority><topic authority="http://roble.intecca.uned.es/tematres/lem/">Plásticos</topic></authority><related type="narrower"><topic>Gomas y resinas sintéticas</topic></related><related type="narrower"><topic>Plásticos reforzados</topic></related><related type="narrower"><topic>Polímeros</topic></related><related type="other"><topic>Productos sintéticos</topic></related><related type="other"><topic>Industria del plástico</topic></related><related type="other"><topic>Tubos de plástico</topic></related><related type="other"><topic>Plasticidad</topic></related><related type="other"><topic>Polimerización</topic></related><related type="broader"><topic>Materiales</topic></related><variant type="other"><topic>Materiales plásticos</topic></variant><variant type="other"><topic>Materias plásticas</topic></variant><variant type="other"><topic>Productos plásticos</topic></variant></mads>