Geography

Letter	Sub heading
A	Geographical studies generally
B	History of geographical knowledge
C	Comprehensive geographies
D	Mathematical geography
E	Physical Geography
F	Biogeography
H	Human geography

Letter	Sub heading
J	British Isles; British Commonwealth generally
K	Europe; Western Europe
L	Central and south-eastern Europe; Balkans
N	Northern and Eastern Europe
P	Non-European countries generally; Near and Middle East; Third World
Q	Africa
R	Asia and the Far East
S	Australasia and the Pacific Islands
T	America; north America generally
U	United States of America
V	Canada
W	Latin America and the Caribbean
X	Special kinds of geographical region