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Subclass D
| D1-2027 | History (General) | ||||
| D1-24.5 | General | ||||
| D25-27 | Military and naval history | ||||
| D31-34 | Political and diplomatic history | ||||
| D51-90 | Ancient history | ||||
| D101-110.5 | Medieval and modern history, 476- | ||||
| D111-203 | Medieval history | ||||
| D135-149 | Migrations | ||||
| D151-173 | Crusades | ||||
| D175-195 | Latin Kingdom of Jerusalem. Latin Orient, 1099-1291 | ||||
| D200-203 | Later medieval. 11th-15th centuries | ||||
| D(204)-(475) | Modern history, 1453- | ||||
| D219-234 | 1453-1648 | ||||
| D242-283.5 | 1601-1715. 17th century | ||||
| D251-271 | Thirty Years’ War, 1618-1648 | ||||
| D274.5-6 | Anglo French War, 1666-1667 | ||||
| D275-276 | War of Devolution, 1667-1668 | ||||
| D277-278.5 | Dutch War, 1672-1678 | ||||
| D279-280.5 | War of the Grand Alliance, 1688-1697 | ||||
| D281-283.5 | War of Spanish Succession, 1701-1714 | ||||
| D284-297 | 1715-1789. 18th century | ||||
| D291-294 | War of Austrian Succession, 1740-1748 | ||||
| D297 | Seven Years’ War, 1756-1763 | ||||
| D299-(475) | 1789- | ||||
| D301-309 | Period of the French Revolution | ||||
| D351-400 | 19th century. 1801-1914/1920 | ||||
| D371-(379) | Eastern question | ||||
| D383 | 1815-1830. Congress of Vienna | ||||
| D385-393 | 1830-1870 | ||||
| D394-400 | 1871-. Later-19th century | ||||
| D410-(475) | 20th century | ||||
| D461-(475) | Eastern question | ||||
| D501-680 | World War I (1914-1918) | ||||
| D720-728 | Period between World Wars (1919-1939) | ||||
| D731-838 | World War II (1939-1945) | ||||
| D839-860 | Post war history (1945- ) | ||||
| D880-888 | Developing countries | ||||
| D890-893 | Eastern Hemisphere | ||||
| D900-2009 | Europe (General) | ||||
| D901-980 | Description and travel | ||||
| D1050-2027 | History | ||||
