>1981

1981 The 25th Anniversary of ASVG

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1981 WIPA 1981, Vienna

16+8 S
multicoloured

1981 The 100th Anniversary of Wilhelm Dachauer

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brown

1981 The 3rd European Regional Conference - Rehabilitation International

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1981 The 125th Anniversary of Sigmund Freud

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pink

1981 UNICHAL Congress - Vienna 1981

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1981 Kuenring Exhibition at Zwettl Abbey

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1981 EUROPA Stamps - Folklore

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1981 The 100th Anniversary of Austrian Telephony

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1981 Children's Stamp

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1981 The 25th Anniversary of Seibersdorf Research Centre

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1981 The 850th Anniversary of the City of St. Veit on Glan

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1981 The 11th International Congress on Clinical Chemistry

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1981 The 75th Anniversary of the Death of Ludwig Boltzmann

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green

1981 World Congress of Fédération Internationale Pharmaceutique

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1981 The 100th Anniversary of Otto Bauer

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1981 The 10th International Congress of Mathematics in Innsbruck

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blue

1981 The 500th Anniversary of the Gothic Winged Altar of St. Wolfgang

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1981 The 75th Anniversary of "Südost-Messe Graz" Trade Fair

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1981 The 16th International Congress on Byzantine Studies

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1981 The 100th Anniversary of Hans Kelsen

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1981 The 200th Anniversary of the Edict of Toleration

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1981 World Nutrition Day

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1981 Modern Art in Austria

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1981 The 7th International Conference of Catholic Employees

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1981 The 125th Anniversary of the Death of Baron Joseph of Hammer-Purgstall

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1981 The 125th Anniversary of Stefan Zweig

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violet

1981 The 90th Anniversary of Julius Raab

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1981 Christmas

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1981 The 800th Anniversary of St. Nikola on the Danube

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1981 The 100th Anniversary of the Medical Rescue Service of Vienna

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