Topogràfic
H - Social Science
22
D - World History
19
P - Language and Literature
16
L - Education
7
K - Law
6
N - Fine Arts
5
T - Technology
5
J - Political Science
4
M - Music
2
A - Treballs generalss
1
B - Filosofia, Psicologia, Religió
1
G - Geography, Anthropology, Recreation
1
Q - Science
1
Z - Library Science
1