https://vocabularyserver.com/udc/en/ Universal Decimal Classification UDC Consortium UDC Consortium 2019-03-06 en 2019-03-06 15:43:58 Publicity. Information work. Public relations 2019-03-06 15:43:58https://vocabularyserver.com/udc/en/xml.php?skosTema=1849https://vocabularyserver.com/udc/en/xml.php?skosTema=1876https://vocabularyserver.com/udc/en/xml.php?skosTema=1877https://vocabularyserver.com/udc/en/xml.php?skosTema=1878https://vocabularyserver.com/udc/en/xml.php?skosTema=1879