Ταξιθετικός Αριθμός
P - Language and Literature
441
L - Education
314
Q - Science
243
G - Geography, Anthropology, Recreation
84
B - Philosophy, Psychology, Religion
83
H - Social Science
78
N - Fine Arts
75
R - Medicine
69
K - Law
52
J - Political Science
44
T - Technology
41
D - World History
18
F - General American History
6
Z - Library Science
5
C - Historical Sciences
4
M - Music
2
U - Military Science
2
S - Agriculture
1