20वीं सदी में प्रकाशित कार्य।
1900–1901–1902–1903–1904–1905–1906–1907–1908–1909 1910–1911–1912–1913–1914–1915–1916–1917–1918–1919 1920–1921–1922–1923–1924–1925–1926–1927–1928–1929 1930–1931–1932–1933–1934–1935–1936–1937–1938–1939 1940–1941–1942–1943–1944–1945–1946–1947–1948–1949 1950–1951–1952–1953–1954–1955–1956–1957–1958–1959 1960–1961–1962–1963–1964–1965–1966–1967–1968–1969 1970–1971–1972–1973–1974–1975–1976–1977–1978–1979 1980–1981–1982–1983–1984–1985–1986–1987–1988–1989 1990–1991–1992–1993–1994–1995–1996–1997–1998–1999
इस श्रेणी की कुल १० में से १० उपश्रेणियाँ निम्नलिखित हैं।
