CLASSIFICATION
H - Social Science
486
S - Agriculture
154
Q - Science
45
R - Medicine
43
L - Education
31
T - Technology
15
J - Political Science
7
A - General Works
3
G - Geography, Anthropology, Recreation
3
C - Historical Sciences
2
D - World History
2
P - Language and Literature
2
B - Philosophy, Psychology, Religion
1
K - Law
1
U - Military Science
1
Z - Library Science
1