Library of Congress Classification ranges for some major world regions are given below.
DA-DJ: Western and Central Europe and the Mediterranean
DJK: Eastern Europe
DK: Russia, the former Soviet Union and republics
DL: Northern Europe and Scandinavia
DS: Asia and the Middle East
DT: Africa
E: United States
F: Latin America
Culture and Customs of Korea by 
Handbook of World Families by 
Japan and the Culture of the Four Seasons by