Шифр
L - Education
3,341
H - Social Science
189
Q - Science
72
B - Philosophy, Psychology, Religion
54
G - Geography, Anthropology, Recreation
50
R - Medicine
42
Z - Library Science
42
P - Language and Literature
39
K - Law
38
T - Technology
25
J - Political Science
14
F - General American History
13
N - Fine Arts
11
M - Music
7
C - Historical Sciences
5
S - Agriculture
5
D - World History
4
A - General Works
1