Classification
N - Fine Arts
19
D - World History
12
P - Language and Literature
6
Z - Library Science
6
H - Social Science
4
M - Music
4
C - Historical Sciences
3
L - Education
3
A - General Works
2
B - Philosophy, Psychology, Religion
2
F - General American History
2
G - Geography, Anthropology, Recreation
2
K - Law
2
R - Medicine
2
T - Technology
2