Sygnatura
300 - Social sciences
656
600 - Technology (Applied sciences)
358
000 - Computer science, information, general works
111
500 - Natural sciences and mathematics
111
900 - History & geography
71
200 - Religion
67
100 - Philosophy & psychology
46
700 - The arts
22
400 - Language
6
800 - Literature (Belles-lettres) and rhetoric
5