DS - Asia 967,155
D - General History 306,860
DK - Russia, Soviet Union, Former Soviet Republics, Poland 252,125
DT - Africa 183,840
DA - Great Britain 177,789
DC - France, Andorra, Monaco 145,950
DG - Italy, Malta 135,440
DD - Germany 127,209
DR - Balkan Peninsula 102,414
DP - Spain, Portugal 83,765
DB - Austria, Liechtenstein, Hungary, Czechoslovakia 56,362
DF - Greece 43,977
DU - Oceania (South Seas) 31,375
DL - Northern Europe, Scandinavia 29,669
DQ - Switzerland 13,578
DJ - Netherlands (Holland) 11,037
DH - Low Countries 10,206
DE - Grecco-Roman World 6,722
DJK - Eastern Europe (General) 5,905
DX - Gypsies 3,128
DAW - Central Europe 1,049
E - United States History 2
B - Philosophy 1
C - General History 1
GA - Mathematical Geography and Cartography 1
JV - Colonization, Immigration 1
PA - Latin and Greek 1
T - General Technology 1