Classification
P - Language and Literature
2,135
Q - Science
108
B - Philosophy, Psychology, Religion
12
H - Social Science
7
R - Medicine
7
G - Geography, Anthropology, Recreation
6
T - Technology
6
D - World History
5
L - Education
5
S - Agriculture
4
J - Political Science
2
C - Historical Sciences
1
E - United States History
1
K - Law
1
V - Naval Science
1
Z - Library Science
1