► D History (General)
► DA The History of Great Britain
► DAW Central European History
► DB Austrian History
- Liechtenstein
- Hungarian
- Czechoslovak
► DC History of France
► DD History of Germany
► DE Greco-Roman History of the wolrd
► DF History of Greece
► DG History of Italy
► DH History of the low countries,
Benelux countries
► DJ History of Netherlands
► DJK Eastern European History (General)
► DK History of Russia
- Soviet Union
- Former Soviet Republics
► DL Northern European History
- Scandinavian
► DP History of Spain
► DQ History of Switzerland
► DR History of the Balkan Peninsula
► DS Asian History
► DT African History
► DU History of Oceania ( Southern seas )
► DX History of the Novel
► EF American History
► G Geography, Anthropology, Re-Creation
► GA Mathematical Geography
- Cartography
► GB Physical Geography
► GC Oceanography
► GE Environmental Sciences
► GF Human Ecology
► GN Anthropology
► GR Folklore
► GT Manners and Customs
► GV Recreation