Marcel Douwe Dekker (Mdd) (1964) is a Dutch systems engineer and conceptual artist, designer, author and editor participating in Wikipedia, Commons, Wikiquote and Wiktionary since September 2004.

"https://si.wikipedia.org/wiki/පරිශීලක:Mdd" වෙතින් සම්ප්‍රවේශනය කෙරිණි