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nationaal archief nationaal archief nationaalarchief women working tennis balls tennisballs factory women working womenworking iconclassna iconclassna iconclassnc iconclassnc iconclassnd iconclassnd iconclassnc iconclassnharbeidsinspectie iconclassnharbeidsinspectie iconclassnd iconclassna iconclassna iconclassne iconclassne operaie