Ταξιθετικός Αριθμός
H - Social Science
653
J - Political Science
41
K - Law
30
S - Agriculture
10
L - Education
9
C - Historical Sciences
8
Q - Science
6
F - General American History
5
T - Technology
5
B - Philosophy, Psychology, Religion
4
G - Geography, Anthropology, Recreation
4
P - Language and Literature
3
D - World History
1
Z - Library Science
1