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Wikipedia says:
This article is on Boulogne-sur-Mer. For other places called Boulogne, see Boulogne. Boulogne-sur-Mer (Bonen in Dutch) is a city in northern France, in the Pas-de-Calais département of which it is a sous-préfecture. It is located by the English Channel.
Population of the city (commune) at the 1999 census was 44,859 inhabitants, whereas the whole metropolitan area (aire urbaine) had 135,116 inhabitants. (...) more....
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