1910 + | 1910s +, Years + |
1910s + | Decades +, 20th century + |
1915 + | 1910s +, Years + |
1920 + | 1920s +, Years + |
1920s + | Decades +, 20th century + |
1930 + | 1930s +, Years + |
1930s + | Decades +, 20th century + |
1940 + | 1940s +, Years + |
1940s + | Decades +, 20th century + |
1950 + | 1950s +, Years + |
1950 in music + | 1950 +, 20th century in music + |
1950s + | Decades +, 20th century + |
1959 in music + | 1959 +, 20th century in music + |
1960 + | 1960s +, Years + |
1960 in music + | 1960 +, 20th century in music + |
1960s + | Decades +, 20th century + |
1961 in music + | 1961 +, 20th century in music + |
1962 in music + | 1962 +, 20th century in music + |
1963 in music + | 1963 +, 20th century in music + |
1964 in music + | 1964 +, 20th century in music + |
1965 in music + | 1965 +, 20th century in music + |
1966 in music + | 1966 +, 20th century in music + |
1967 in music + | 1967 +, 20th century in music + |
1968 in music + | 1968 +, 20th century in music + |
1969 in music + | 1969 +, 20th century in music + |
1970 in music + | 1970 +, 20th century in music + |
1970s + | Decades +, 20th century + |
1979 in music + | 1979 +, 20th century in music + |
1980s + | Decades +, 20th century + |
1986 + | 1980s +, Years + |
1986 introductions + | 1986 +, 20th-century introductions + |
1990s + | Decades +, 20th century + |
19th century + | Centuries +, 2nd millennium +, Modern history + |
19th century BC + | Centuries BC + |
1st century BC + | Centuries BC +, 1st millennium BC + |
20 century + | Centuries + |
2000s + | Decades +, 21st century + |
2010s + | Decades +, 21st century + |
2012 + | 2010s +, Years + |
2015 + | 2010s +, Years + |
2020s + | Decades +, 21st century + |
2030s + | Decades +, 21st century + |
2040s + | Decades +, 21st century + |
2050s + | Decades +, 21st century + |
2060s + | Decades +, 21st century + |
2070s + | Decades +, 21st century + |
2080s + | Decades +, 21st century + |
2090s + | Decades +, 21st century + |
20th century + | Centuries +, 2nd millennium +, Modern history +, … |
20th century BC + | Centuries BC + |
20th century in music + | 20th-century works +, Music by century +, Years in music +, … |
20th-century classical composers + | Classical composers +, 20th-century classical music +, 20th-century composers + |
20th-century classical music + | Classical music by period + |
20th-century introductions + | 20th century +, Introductions by year +, Introductions by century + |
20th-century people by occupation + | 20th-century people +, People by occupation and century + |
21 century + | Centuries + |
21st century + | 3rd millennium +, Centuries +, Modern history +, … |
21st century BC + | Centuries BC + |
21st-century classical composers + | Classical composers +, Contemporary classical music + |
21st-century people + | 21st century +, People by century + |
21st-century people by occupation + | 21st-century people +, People by occupation and century + |
21th-century classical music + | Classical music by period + |
22nd century BC + | Centuries BC + |
23rd century BC + | Centuries BC + |
24th century BC + | Centuries BC + |
25th century BC + | Centuries BC + |
26th century BC + | Centuries BC + |
27th century BC + | Centuries BC + |
28th century BC + | Centuries BC +, 3rd millennium BC + |
29th century BC + | Centuries BC +, 3rd millennium BC + |
2nd century + | Centuries + |
2nd century BC + | Centuries BC +, 1st millennium BC +, Centuries + |
2nd millennium + | Millennia + |
30th century BC + | Centuries BC + |
3rd century + | Centuries + |
3rd century BC + | Centuries BC + |
3rd millennium + | Millennia +, Centuries in the future + |
4th century + | Centuries + |
4th century BC + | Centuries BC + |
5th century + | Centuries + |
5th century BC + | Centuries BC + |
6th century + | Centuries + |
6th century BC + | Centuries BC + |
78 rpm records + | Gramophone records + |
7th century + | Centuries + |
7th century BC + | Centuries BC + |
8th century + | Centuries + |
8th century BC + | Centuries BC + |
97 BC + | 90s BC +, Years + |
9th century + | Centuries + |
9th century BC + | Centuries BC + |
Academia + | Education +, Knowledge + |
Academic disciplines + | Academia + |
Access control + | Security + |
Acoustics + | Applied and interdisciplinary physics + |
Activism + | Social issues +, Social change + |
Activism by method + | Activism +, Categories by type + |
Administration + | Business + |
Administrative divisions + | Country subdivisions + |