DS - Asia 962,697
D - General History 305,971
DK - Russia, Soviet Union, Former Soviet Republics, Poland 251,291
DT - Africa 183,268
DA - Great Britain 177,461
DC - France, Andorra, Monaco 145,652
DG - Italy, Malta 135,025
DD - Germany 126,813
DR - Balkan Peninsula 101,873
DP - Spain, Portugal 83,479
DB - Austria, Liechtenstein, Hungary, Czechoslovakia 56,176
DF - Greece 43,808
DU - Oceania (South Seas) 31,299
DL - Northern Europe, Scandinavia 29,557
DQ - Switzerland 13,525
DJ - Netherlands (Holland) 11,007
DH - Low Countries 10,176
DE - Grecco-Roman World 6,703
DJK - Eastern Europe (General) 5,892
DX - Gypsies 3,121
DAW - Central Europe 1,047
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