Ταξιθετικός Αριθμός
Q - Science
678
H - Social Science
108
T - Technology
88
L - Education
34
B - Philosophy, Psychology, Religion
20
P - Language and Literature
9
R - Medicine
9
G - Geography, Anthropology, Recreation
7
S - Agriculture
5
N - Fine Arts
4
F - General American History
2
E - United States History
1
M - Music
1