authors, Erwin Seyfried, Klaus Kohlmeyer, Rafael Furth-Riedesser
出版情報:
Luxembourg : Office for Official Publications of the European Communities , Thessaloniki : European Centre for the Development of Vocational Training, 2000
Berlin : CEDEFOP, European Centre for the Development of Vocational Training , Luxembourg : Office for Official Publications of the European Communities, 1990
Berlin : CEDEFOP, European Centre for the Development of Vocational Training , Luxembourg : Office for Official Publications of the European Communities, 1992