: BLYFREhttp://www.eionet.europa.eu/gemet/source/ Create a prefix for http://www.eionet.europa.eu/gemet/source/ Hit Enter to save Double click to create a prefix | BLYFRE - A geology for engineers - Seventh Edition | : defaulthttps://data.pldn.nl/geoe3/GEMET-thesauri/graphs/ Create a prefix for https://data.pldn.nl/geoe3/GEMET-thesauri/graphs/ Hit Enter to save Double click to create a prefix |