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Subclass DR
| DR1-2285 | History of Balkan Peninsula | |||||
| DR1-11 | General | |||||
| DR11.5-16 | Description and travel | |||||
| DR20-27 | Antiquities. Social life and customs. Ethnography | |||||
| DR32-48.5 | History. Balkan War, 1912-1913 | |||||
| DR50-50.84 | Thrace | |||||
| DR51-98 | Bulgaria | |||||
| DR51-56.7 | General | |||||
| DR57-60.2 | Description and travel | |||||
| DR62-64.5 | Antiquities. Social life and customs. Ethnography | |||||
| DR65-93.47 | History | |||||
| DR65-69.5 | General | |||||
| DR70-73 | Military and political history. Foreign relations | |||||
| DR73.7-93.47 | By period | |||||
| DR73.7-80.8 | Early and medieval | |||||
| DR74.5-77.8 | First Bulgarian Empire, 681-1018 | |||||
| DR79-79.25 | Greek rule 1018-1185 | |||||
| DR80-80.8 | Second Bulgarian Empire, 1185-1396 | |||||
| DR81-84 | Turkish rule, 1396-1878 | |||||
| DR84.9-89.8 | 1878-1944 | |||||
| DR89.9-93.34 | 1944-1990 | |||||
| DR93.4-93.47 | 1990- | |||||
| DR95-98 | Local history and description | |||||
| DR95 | Provinces, regions, etc., A-Z | |||||
| DR97 | Sofia | |||||
| DR98 | Other cities, towns, etc., A-Z | |||||
| DR201-296 | Romania | |||||
| DR201-206 | General | |||||
| DR207-210 | Description and travel | |||||
| DR211-214.2 | Antiquities. Social life and customs. Ethnography | |||||
| DR215-269.6 | History | |||||
| DR215-218 | General | |||||
| DR219-229 | Military, naval, and political history. Foreign relations | |||||
| DR238-269.6 | By period | |||||
| DR238-240.5 | Early and medieval to 1601. Roman period | |||||
| DR241-241.5 | Phanariote regime, 1601-1822 | |||||
| DR242-249 | 1822-1881. 19th century | |||||
| DR250-266.5 | 1866/1881-1944 | |||||
| DR267-267.5 | 1944-1989 | |||||
| DR268-269.6 | 1989- | |||||
| DR279-296 | Local history and description | |||||
| DR279-280.74 | Transylvania | |||||
| DR281 | Other provinces, regions, etc., A-Z | |||||
| DR286 | Bucharest | |||||
| DR296 | Other cities, towns, etc., A-Z | |||||
| DR401-741 | Turkey | |||||
| DR401-419 | General | |||||
| DR421-429.4 | Description and travel | |||||
| DR431-435 | Antiquities. Social life and customs. Ethnography | |||||
