索引號
L - Education
787
H - Social Science
91
K - Law
76
P - Language and Literature
70
R - Medicine
50
Q - Science
32
B - Philosophy, Psychology, Religion
30
N - Fine Arts
28
J - Political Science
26
G - Geography, Anthropology, Recreation
24
T - Technology
21
F - General American History
19
D - World History
15
Z - Library Science
15
C - Historical Sciences
12
S - Agriculture
12
A - General Works
1
M - Music
1
U - Military Science
1