Шифр
P - Language and Literature
38,074
H - Social Science
1,324
D - World History
361
M - Music
231
B - Philosophy, Psychology, Religion
217
N - Fine Arts
119
Z - Library Science
116
C - Historical Sciences
104
G - Geography, Anthropology, Recreation
87
F - General American History
54
E - United States History
52
R - Medicine
45
A - General Works
42
V - Naval Science
25
T - Technology
19
K - Law
10
L - Education
8
Q - Science
6
S - Agriculture
4
U - Military Science
2
J - Political Science
1