Шифр
E - United States History
13,390
P - Language and Literature
1,563
F - General American History
1,283
J - Political Science
419
K - Law
297
H - Social Science
198
M - Music
170
G - Geography, Anthropology, Recreation
144
Z - Library Science
138
U - Military Science
125
C - Historical Sciences
111
A - General Works
106
B - Philosophy, Psychology, Religion
87
R - Medicine
48
N - Fine Arts
41
D - World History
38
L - Education
27
V - Naval Science
26
T - Technology
24
S - Agriculture
15
Q - Science
4