CLASSIFICATION
H - Social Science
178
S - Agriculture
147
L - Education
62
Q - Science
48
T - Technology
27
R - Medicine
24
P - Language and Literature
13
G - Geography, Anthropology, Recreation
12
B - Philosophy, Psychology, Religion
11
J - Political Science
5
D - World History
3
A - General Works
1
C - Historical Sciences
1
K - Law
1
Z - Library Science
1