Classification
510 - Mathematics
396
800 - Literature & rhetoric
311
340 - Law
75
346 - Private law
57
700 - The arts; fine & decorative arts
47
720 - Architecture
25
306 - Culture & institutions
23
020 - Library & information sciences
21
701 - Philosophy of fine & decorative arts
20
305 - Social groups
18
347 - Civil procedure & courts
17
069 - Museum science
14
512 - Algebra
14
780 - Music
13
940 - History of Europe
13
300 - Social sciences
12
515 - Analysis
11
530 - Physics
9
709 - Historical, geographic & persons treatment
9
111 - Ontology
8
342 - Constitutional & administrative law
8
344 - Labor, social, education & cultural law
8
345 - Criminal law
8
100 - Philosophy & psychology
7
341 - Law of nations
7
519 - Probabilities & applied mathematics
7
658 - General management
7
330 - Economics
6
943 - Central Europe; Germany
6
025 - Library operations
5
304 - Factors affecting social behavior
5
307 - Communities
5
338 - Production
5
370 - Education
5
511 - General principles of mathematics
5
516 - Geometry
5
809 - History, description & criticism
5
030 - General encyclopedic works
4
349 - Law of specific jurisdictions & areas
4
400 - Language
4
620 - Engineering & allied operations
4
704 - Special topics in fine & decorative arts
4
770 - Photography, photographs & computer art
4
781 - General principles & musical forms
4
900 - History & geography
4
945 - Italian Peninsula & adjacent islands
4
070 - News media, journalism & publishing
3
261 - Social theology
3
301 - Sociology & anthropology
3
320 - Political science
3
more ...