Classification
005 - Computer programming, programs & data
191
331 - Labor economics
181
745 - Decorative arts
146
006 - Special computer methods
70
500 - Natural sciences & mathematics
58
620 - Engineering & allied operations
49
384 - Communications; telecommunication
37
000 - Computer science, information & general works
27
302 - Social interaction
22
330 - Economics
12
740 - Drawing & decorative arts
9
658 - General management
8
820 - English & Old English literatures
8
686 - Printing & related activities
7
004 - Data processing & computer science
6
011 - Bibliographies
5
600 - Technology
5
741 - Drawing & drawings
5
340 - Law
4
381 - Commerce
4
540 - Chemistry & allied sciences
4
700 - The arts; fine & decorative arts
4
900 - History & geography
4
333 - Economics of land & energy
3
374 - Adult education
3
380 - Commerce, communications & transportation
3
580 - Plants (Botany)
3
610 - Medicine & health
3
070 - News media, journalism & publishing
2
140 - Specific philosophical schools
2
300 - Social sciences
2
320 - Political science
2
360 - Social problems & services; associations
2
651 - Office services
2
652 - Processes of written communication
2
659 - Advertising & public relations
2
808 - Rhetoric & collections of literature
2
001 - Knowledge
1
280 - Christian denominations & sects
1
338 - Production
1
363 - Other social problems & services
1
530 - Physics
1
535 - Light & infrared & ultraviolet phenomena
1
572 - Biochemistry
1
581 - Specific topics in natural history
1
616 - Diseases
1
630 - Agriculture & related technologies
1
670 - Manufacturing
1
770 - Photography, photographs & computer art
1
800 - Literature & rhetoric
1
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