DescriptionNl-periodieks.ogg Wikiwoordenboek audio Date 19 February 2017 Source Own work Author Marcel coenders...
DescriptionNl-periodiek.ogg English: Dutch pronunciation of "periodiek" Source Own work Author GerardM...
DescriptionNl-periodiek systeem.ogg Nederlands: Dutch pronunciation Date 1 October 2013, 09:28:56 Source Own work Author Marcel coenders...
DescriptionNl-periodiek systeempje.ogg audio wikiwoordenboek Date 3 May 2017 Source Own work Author Marcel coenders...
DescriptionNl-periodiek systeem der elementen.ogg Dutch pronunciation Date 13 October 2013 Source Own work Author Marcel coenders...