Ταξιθετικός Αριθμός
H - Social Science
179
F - General American History
22
L - Education
14
B - Philosophy, Psychology, Religion
13
J - Political Science
11
P - Language and Literature
7
Q - Science
6
G - Geography, Anthropology, Recreation
4
K - Law
4
D - World History
2
N - Fine Arts
2
R - Medicine
2
S - Agriculture
2
Z - Library Science
2
A - General Works
1
C - Historical Sciences
1
T - Technology
1