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| DG539-545.8 | 16th-18th centuries | |||||||
| DG546-549 | 1792-1815. Napoleonic period | |||||||
| DG548-549 | Kingdom of Italy | |||||||
| DG550.5-564 | 19th century | |||||||
| DG552-554.5 | 1848-1871. Risorgimento | |||||||
| DG553-553.5 | 1848-1849. Austro-Sardinian War | |||||||
| DG555-575 | 1871-1947. United Italy (Monarchy) | |||||||
| DG571-572 | 1919-1945. Fascism | |||||||
| DG576-583.8 | 1948-. Republic | |||||||
| DG600-684.72 | Northern Italy | |||||||
| DG600-609 | General | |||||||
| DG610-618.78 | Piedmont. Savoy | |||||||
| DG631-645 | Genoa | |||||||
| DG651-664.5 | Milan. Lombardy | |||||||
| DG670-684.72 | Venice | |||||||
| DG691-817.3 | Central Italy | |||||||
| DG691-694 | General | |||||||
| DG731-759.3 | Tuscany. Florence | |||||||
| DG791-800 | Papal States (States of the Church). Holy See. Vatican City | |||||||
| DG803-817.3 | Rome (Modern city) | |||||||
| DG819-875 | Southern Italy | |||||||
| DG819-829 | General | |||||||
| DG831 | Sicily and Malta | |||||||
| DG840-857.5 | Naples. Kingdom of the Two Sicilies | |||||||
| DG861-875 | Sicily | |||||||
| DG975 | Other cities (non metropolitan), provinces, etc., A-Z | |||||||
| DG987-999 | Malta. Maltese Islands | |||||||
