Podobné jednotky

• Science year 1990. The World Book annual science supplement. A review of
  Vydané: (1989)
  
• Science year 1992. : The World Book annual science supplement. A review of science and technology during the 1991 school year.
  Vydané: (1991)
  
• The 1989 World Book year book. The annual supplement to The World Book
  Vydané: (1989)
  
• The 1990 World Book year book. The annual supplement to The World Book
  Vydané: (1990)
  
• Science year 1995. : The World Book annual science supplement.
  Vydané: (1994)