Classification
306 - Culture & institutions
305 - Social groups
281
610 - Medicine & health
219
300 - Social sciences
22
331 - Labor economics
21
500 - Natural sciences & mathematics
21
330 - Economics
14
900 - History & geography
12
302 - Social interaction
10
658 - General management
9
741 - Drawing & drawings
9
809 - History, description & criticism
8
303 - Social processes
6
792 - Stage presentations
6
400 - Language
5
641 - Food & drink
5
700 - The arts; fine & decorative arts
5
200 - Religion
4
332 - Financial economics
4
338 - Production
4
384 - Communications; telecommunication
4
100 - Philosophy & psychology
3
158 - Applied psychology
3
320 - Political science
3
650 - Management & auxiliary services
3
140 - Specific philosophical schools
2
201 - Religious mythology & social theology
2
323 - Civil & political rights
2
339 - Macroeconomics & related topics
2
340 - Law
2
380 - Commerce, communications & transportation
2
381 - Commerce
2
006 - Special computer methods
1
011 - Bibliographies
1
069 - Museum science
1
153 - Mental processes & intelligence
1
170 - Ethics
1
261 - Social theology
1
301 - Sociology & anthropology
1
321 - Systems of governments & states
1
335 - Socialism & related systems
1
361 - Social problems & social welfare in general
1
363 - Other social problems & services
1
371 - Schools & their activities; special education
1
410 - Linguistics
1
570 - Life sciences; biology
1
576 - Genetics & evolution
1
751 - Techniques, equipment, materials & forms
1
820 - English & Old English literatures
1
830 - Literatures of Germanic languages
1
more ...