http://www.vocabularyserver.com/gemet/el/ GEMET Thesaurus EIONET EIONET 0000-00-00 el 2011-04-14 11:45:18 καθίζηση του εδάφους 2011-04-14 11:45:18http://www.vocabularyserver.com/gemet/el/xml.php?skosTema=7881http://www.vocabularyserver.com/gemet/el/xml.php?skosTema=8163