1981 The 125th Anniversary of the Death of Baron Joseph of Hammer-Purgstall
1981 The 125th Anniversary of the Death of Baron Joseph of Hammer-Purgstall
Austria
1981 The 7th International Conference of Catholic Employees
1981 The 7th International Conference of Catholic Employees
1981 The 200th Anniversary of the Edict of Toleration
1981 The 200th Anniversary of the Edict of Toleration
1981 The 16th International Congress on Byzantine Studies
1981 The 16th International Congress on Byzantine Studies
1981 The 75th Anniversary of “Südost-Messe Graz” Trade Fair
1981 The 75th Anniversary of “Südost-Messe Graz” Trade Fair
1981 The 500th Anniversary of the Gothic Winged Altar of St. Wolfgang
1981 The 500th Anniversary of the Gothic Winged Altar of St. Wolfgang
1981 The 10th International Congress of Mathematics in Innsbruck
1981 The 10th International Congress of Mathematics in Innsbruck