Número de Clasificación
B - Philosophy, Psychology, Religion
145
T - Technology
142
A - General Works
124
E - United States History
40
C - Historical Sciences
36
P - Language and Literature
34
M - Music
30
K - Law
17
S - Agriculture
13
Z - Library Science
9
D - World History
5
N - Fine Arts
5
U - Military Science
3
H - Social Science
2
L - Education
2
R - Medicine
2