Classification
005 - Computer programming, programs & data
493
500 - Natural sciences & mathematics
474
000 - Computer science, information & general works
91
620 - Engineering & allied operations
81
331 - Labor economics
59
658 - General management
33
745 - Decorative arts
30
006 - Special computer methods
22
384 - Communications; telecommunication
15
004 - Data processing & computer science
10
700 - The arts; fine & decorative arts
10
140 - Specific philosophical schools
8
363 - Other social problems & services
8
380 - Commerce, communications & transportation
8
600 - Technology
7
900 - History & geography
7
100 - Philosophy & psychology
6
302 - Social interaction
6
330 - Economics
6
333 - Economics of land & energy
4
340 - Law
4
519 - Probabilities & applied mathematics
4
576 - Genetics & evolution
4
720 - Architecture
4
320 - Political science
3
510 - Mathematics
3
794 - Indoor games of skill
3
001 - Knowledge
2
120 - Epistemology, causation & humankind
2
332 - Financial economics
2
374 - Adult education
2
630 - Agriculture & related technologies
2
800 - Literature & rhetoric
2
051 - Serials in American English
1
300 - Social sciences
1
338 - Production
1
400 - Language
1
542 - Techniques, equipment & materials
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
670 - Manufacturing
1
770 - Photography, photographs & computer art
1