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1
Date 1960
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2Nederlandstalige versie : MAD/276.34Subjects: “...Nationale Arbeidsraad...”
Date 1979
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3Frantalige versie : MAD/276.34Subjects: “...Nationale Arbeidsraad...”
Date 1979
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4
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5Subjects: “...Nationale Arbeidsraad...”
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6Subjects: “...Nationale Arbeidsraad...”
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7Op titelpagina : "Coördination officieuse des conventions collectives de travail interprofessionelles conclues au Conseil National du Travail ...Subjects: “...Nationale Arbeidsraad...”
Date [1984]
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8S/91/101Subjects: “...Nationale Arbeidsraad...”
Date 1977