Classification
006 - Special computer methods
2,306
770 - Photography, photographs & computer art
1,372
004 - Data processing & computer science
930
302 - Social interaction
811
000 - Computer science, information & general works
712
005 - Computer programming, programs & data
660
620 - Engineering & allied operations
615
621 - Applied physics
598
600 - Technology
525
700 - The arts; fine & decorative arts
471
330 - Economics
446
771 - Techniques, equipment & materials
391
658 - General management
384
745 - Decorative arts
378
900 - History & geography
350
370 - Education
286
778 - Fields & kinds of photography
270
371 - Schools & their activities; special education
263
333 - Economics of land & energy
245
140 - Specific philosophical schools
243
500 - Natural sciences & mathematics
242
610 - Medicine & health
230
380 - Commerce, communications & transportation
219
384 - Communications; telecommunication
192
777 - [Unassigned]
184
320 - Political science
179
791 - Public performances
179
331 - Labor economics
171
363 - Other social problems & services
166
300 - Social sciences
154
781 - General principles & musical forms
131
775 - Digital photography
118
025 - Library operations
114
659 - Advertising & public relations
106
100 - Philosophy & psychology
95
003 - Systems
75
340 - Law
74
576 - Genetics & evolution
72
400 - Language
67
800 - Literature & rhetoric
67
303 - Social processes
63
580 - Plants (Botany)
56
381 - Commerce
55
338 - Production
52
629 - Other branches of engineering
52
720 - Architecture
50
551 - Geology, hydrology & meteorology
49
780 - Music
47
510 - Mathematics
42
410 - Linguistics
41
more ...