http://www.vocabularyserver.com/gemet/en/http://www.vocabularyserver.com/gemet/en/xml.php?skosTema=47acidity http://www.vocabularyserver.com/gemet/en/xml.php?skosTema=47 strong acidity NT http://www.vocabularyserver.com/gemet/en/xml.php?skosTema=47 acidity degree BT