European Commission. Directorate-general for Employment, Industrial Relations and Socical AffairsOffice for Official Publications of the European Communities ,19981998
全国の図書館
European Commission, Directorate-General XII, Science, Research and Development [and] Edith CressonOffice for official publications of the European Communities, 19981998
全国の図書館
European Commission. Directorate-general for Employment, Industrial Relations and Social AffairsOffice for Official Publications of the European Communities ,19981998
全国の図書館
European Commission, Directorate-General Science, Research and DevelopmentOffice for official publications of the European Communities, 19981998
全国の図書館