Ταξιθετικός Αριθμός
R - Medicine
19
D - World History
14
L - Education
13
H - Social Science
12
Q - Science
11
N - Fine Arts
4
P - Language and Literature
4
T - Technology
4
G - Geography, Anthropology, Recreation
3
B - Philosophy, Psychology, Religion
2
S - Agriculture
2
Z - Library Science
2
A - General Works
1
E - United States History
1
J - Political Science
1
K - Law
1