Columbia subject headings:
History, Modern--20th century.
Hobsbawm, E. J. (Eric J.), 1917-2012. Age of extremes.
Harvard subject headings:
History, Modern--20th century
Hobsbawm, E. J. (Eric J.), 1917- Age of extremes.
Princeton subject headings:
Civilization, Modern--20th century--Congresses.
Hobsbawm, E. J. (Eric J.), 1917- Secolo breve--Congresses.