Classification
791 - Public performances
261
384 - Communications; telecommunication
201
302 - Social interaction
56
620 - Engineering & allied operations
42
621 - Applied physics
41
777 - [Unassigned]
27
900 - History & geography
26
700 - The arts; fine & decorative arts
25
006 - Special computer methods
24
306 - Culture & institutions
24
330 - Economics
21
778 - Fields & kinds of photography
21
331 - Labor economics
20
658 - General management
20
070 - News media, journalism & publishing
18
000 - Computer science, information & general works
15
338 - Production
15
808 - Rhetoric & collections of literature
15
320 - Political science
13
770 - Photography, photographs & computer art
12
380 - Commerce, communications & transportation
11
781 - General principles & musical forms
10
300 - Social sciences
9
792 - Stage presentations
8
809 - History, description & criticism
8
305 - Social groups
7
600 - Technology
7
301 - Sociology & anthropology
6
381 - Commerce
6
745 - Decorative arts
6
800 - Literature & rhetoric
6
100 - Philosophy & psychology
5
780 - Music
5
370 - Education
4
400 - Language
4
500 - Natural sciences & mathematics
4
801 - Philosophy & theory
4
170 - Ethics
3
200 - Religion
3
333 - Economics of land & energy
3
340 - Law
3
410 - Linguistics
3
610 - Medicine & health
3
659 - Advertising & public relations
3
140 - Specific philosophical schools
2
155 - Differential & developmental psychology
2
304 - Factors affecting social behavior
2
364 - Criminology
2
374 - Adult education
2
418 - Standard usage & applied linguistics
2
more ...