Шифр
D - World History
65,227
E - United States History
12,967
J - Political Science
11,828
F - General American History
6,817
H - Social Science
5,731
K - Law
5,376
U - Military Science
2,196
B - Philosophy, Psychology, Religion
1,292
P - Language and Literature
1,071
Z - Library Science
852
A - General Works
836
C - Historical Sciences
342
G - Geography, Anthropology, Recreation
297
N - Fine Arts
257
M - Music
173
V - Naval Science
144
L - Education
131
T - Technology
108
Q - Science
94
R - Medicine
48
S - Agriculture
48