Número de Clasificación
300 - Social sciences
42
600 - Technology (Applied sciences)
20
500 - Natural sciences and mathematics
9
000 - Computer science, information, general works
7
400 - Language
5
700 - The arts
5
800 - Literature (Belles-lettres) and rhetoric
3
900 - History & geography
3
100 - Philosophy & psychology
2
200 - Religion
2