Шифр
300 - Social sciences
4,075
000 - Computer science, information, general works
112
600 - Technology (Applied sciences)
103
100 - Philosophy & psychology
54
500 - Natural sciences and mathematics
42
700 - The arts
39
900 - History & geography
21
400 - Language
19
200 - Religion
12
800 - Literature (Belles-lettres) and rhetoric
9