http://www.vocabularyserver.com/gemet/en/http://www.vocabularyserver.com/gemet/en/xml.php?skosTema=1378chloroethylene http://www.vocabularyserver.com/gemet/en/xml.php?skosTema=1378 chlorinated hydrocarbon BT http://www.vocabularyserver.com/gemet/en/xml.php?skosTema=1378 perchloroethylene NT http://www.vocabularyserver.com/gemet/en/xml.php?skosTema=1378 DDT NT