Ταξιθετικός Αριθμός
H - Social Science
515
K - Law
30
T - Technology
16
L - Education
6
P - Language and Literature
5
G - Geography, Anthropology, Recreation
4
Q - Science
4
Z - Library Science
4
D - World History
3
J - Political Science
3
A - General Works
1
C - Historical Sciences
1
E - United States History
1
N - Fine Arts
1
R - Medicine
1
U - Military Science
1