D - World History and History of Europe, Asia, Africa, Australia, New Zealand, etc.
Subclass D - General History
D 1-24.5 General
D 25-27 Military and naval history
D 31-34 Political and diplomatic history
D 51-90 Ancient History
Subclass DG - History of Italy
DG11-365 Ancient Italy. Rome to 476
DG401-583.8 Medieval and modern Italy, 476
DG600-684.72 Northern Italy
DG691-817.3 Central Italy
DG819-875 Southern Italy
DG975 Other cities (non-metropolitan), provinces, etc., A-Z
DG987-999 Malta. Maltese Islands
Subclass DE History of the Greco-Roman world
DE1-100 History of the Greco-Roman world
DE1-15.5 General
DE23-31 Geography
DE46-73.2 Antiquities. Civilization. Culture. Ethnography
DE80-100 History