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Cognomen דואר (Duer
, Doerr
, Douer
) , all over the world, is a common surname. The last name דואר is habitual in Western Europe, particularly Austria, where it is quite a rare surname, Germany, and Luxembourg. Not in comparison with a country's population, it is the most numerous in the United States, Germany, and Austria. Very seldom, דואר is the forename as well as the last name.