Ταξιθετικός Αριθμός
L - Education
806
P - Language and Literature
193
H - Social Science
141
K - Law
97
B - Philosophy, Psychology, Religion
63
J - Political Science
63
R - Medicine
56
N - Fine Arts
51
D - World History
47
F - General American History
45
Q - Science
43
G - Geography, Anthropology, Recreation
40
T - Technology
33
Z - Library Science
17
C - Historical Sciences
16
S - Agriculture
12
A - General Works
2
M - Music
2
U - Military Science
1