Topogràfic
P - Language and Literature
17
H - Social Science
16
L - Education
11
D - World History
7
R - Medicine
7
Q - Science
4
S - Agriculture
4
K - Law
3
B - Filosofia, Psicologia, Religió
2
A - Treballs generalss
1
G - Geography, Anthropology, Recreation
1
J - Political Science
1
N - Fine Arts
1
T - Technology
1
Z - Library Science
1