en2015-08-18 18:10 PM CESThttp://inspire.ec.europa.eu/codelist/CommodityCodeValue/holmium:1http://inspire.ec.europa.eu/codelist/CommodityCodeValue/holmiumHolmium is a chemical element with the symbol Ho and atomic number 67. Part of the lanthanide series, holmium is a rare earth element. - http://en.wikipedia.org/wiki/Holmium