CLASSIFICATION
D - World History
73
N - Fine Arts
34
L - Education
18
G - Geography, Anthropology, Recreation
14
P - Language and Literature
12
B - Philosophy, Psychology, Religion
9
H - Social Science
9
T - Technology
8
C - Historical Sciences
3
Q - Science
3
S - Agriculture
3
M - Music
2
A - General Works
1
E - United States History
1
K - Law
1
U - Military Science
1
V - Naval Science
1