NGL | Sam Houston State University

In the LC system, the broadest category is called a class, the subclassification narrows the class to a more specific subjects, and the divisions narrow it still further.

Below are the classes.

A		General Works
B		Philosophy
C		Auxiliary Sciences of History
D		History: General and Old World
E		History: America
F		History: America
G		Geography, Maps, Anthropology, Recreation
H		Social Sciences
J		Political Science
K		Law
L		Education
M		Music and books on music
N		Fine Arts
P		Language and Literature
Q		Science
R		Medicine
S		Agriculture
T		Technology
U		Military Science
V		Naval Science
Z		Bibliography and Library Science