Year

• 1972 (2) 

  1968 (2) 1974 (1) 1975 (1) 1976 (1)

Themes

•  Architecture (3)
•  Communications (1)
•  Cultures (1)
•  Fine arts (1)
•  Music (1)
•  Plants (1)
•  Sports (1)
•  Transport (1)