1.

図書
図書
1. Occupations in the tourist sector : a comparative analysis in nine Community States
Duccio Guerra, Giovanni Peroni
出版情報: Berlin : European Centre for the Development of Vocational Training , Luxembourg : Office for Official Publications of the European Communities, 1994
2.

図書
図書
2. Occupations in the hotel tourist sector within the European Community : a comparative analysis
Giovanni Peroni, Duccio Guera ; edited by CEDEFOP
出版情報: Luxembourg : Office for Official Publications of the European Communities, 1991