http://www.vocabularyserver.com/gemet/pt/http://www.vocabularyserver.com/gemet/pt/xml.php?skosTema=1500carvão http://www.vocabularyserver.com/gemet/pt/xml.php?skosTema=1500 extracção de carvão RT http://www.vocabularyserver.com/gemet/pt/xml.php?skosTema=1500 carvão vegetal NT http://www.vocabularyserver.com/gemet/pt/xml.php?skosTema=1500 hulha NT http://www.vocabularyserver.com/gemet/pt/xml.php?skosTema=1500 coque NT http://www.vocabularyserver.com/gemet/pt/xml.php?skosTema=1500 combustíveis fósseis BT