Commission of the European Communities, Directorate-General for Employment, Social Affairs, and EducationOffice for Official Publications of the European Communities1985
Commission of the European Communities, Directorate-General for Employment, Social Affairs and EducationOffice for Official Publications of the European Communitiesc1984
Commission of the European Communities, Directorate-General for Employment, Social Affairs and EducationOffice for Official Publications of the European Communities1984