Ταξιθετικός Αριθμός
H - Social Science
410
K - Law
284
F - General American History
263
L - Education
122
P - Language and Literature
116
J - Political Science
100
N - Fine Arts
55
G - Geography, Anthropology, Recreation
50
R - Medicine
42
Q - Science
32
T - Technology
31
B - Philosophy, Psychology, Religion
29
M - Music
23
S - Agriculture
13
Z - Library Science
12
U - Military Science
7
A - General Works
3
C - Historical Sciences
3
D - World History
2
E - United States History
2