Circulation books are arranged on the selves according to the Library of Congress Classification system. Call numbers begin with letters, e.g., BF, DS, E, QA, QP followed by 3 or four numbers plus additional decimal numbers if needed. The last set is a combination of letters and numbers, e.g.:
BF DS Q
121 688 75
H5 C6 S9
B34 2016
Below is an outline of the Library of Congress Classification scheme which organizes books according to subject:
A General Works
B-BJ Philosophy, Psychology
BL-BX Religion
C Auxiliary Sciences of History
D History: General and Old World
E-F History: America
G Geography, Anthropology, Recreation
H Social Sciences
J Political Science
K Law
L Education
M Music
N Fine Arts
P Language and Literature
Q Science
R Medicine
S Agriculture
T Technology
U Military Science
V Naval Sciences
Z Bibliography, Library Science
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