http://www.vocabularyserver.com/gemet/en/http://www.vocabularyserver.com/gemet/en/xml.php?skosTema=7937sound immission http://www.vocabularyserver.com/gemet/en/xml.php?skosTema=7937 immission BT http://www.vocabularyserver.com/gemet/en/xml.php?skosTema=7937 acoustic level RT http://www.vocabularyserver.com/gemet/en/xml.php?skosTema=7937 noise immission NT