| Subject |
|---|
| 1969 [1] |
| 1984 [1] |
| 1987 [1] |
| 2. světová válka [1] |
| 2001 [1] |
| 2009 [1] |
| 2022 [1] |
| 21. století [1] |
| 21. ústavní dodatek [1] |
| 21st Amendment [1] |
| 21st century [1] |
| 30. roky 19. storočia [1] |
| 451 stupňů Fahrenheita [2] |
| 70. léta [1] |
| 7S McKinsey [1] |
| 9/11 [1] |
| 9th century [1] |
| [pendulum] efekt [1] |
| \kur{Catch-22} [1] |
| \kur{Ender's Game} [1] |