D - General History 16,234
DS - Asia 10,191
DT - Africa 3,984
DK - Russia, Soviet Union, Former Soviet Republics, Poland 3,304
DD - Germany 1,543
DC - France, Andorra, Monaco 964
DA - Great Britain 860
DR - Balkan Peninsula 704
DG - Italy, Malta 554
DF - Greece 509
DL - Northern Europe, Scandinavia 411
DQ - Switzerland 347
DU - Oceania (South Seas) 342
DB - Austria, Liechtenstein, Hungary, Czechoslovakia 263
DP - Spain, Portugal 230
DJ - Netherlands (Holland) 147
DE - Grecco-Roman World 79
DH - Low Countries 62
DJK - Eastern Europe (General) 50
DX - Gypsies 14
DAW - Central Europe 2
E - United States History 2