Classification
006 - Special computer methods
2,168
005 - Computer programming, programs & data
178
004 - Data processing & computer science
82
003 - Systems
36
040 - [Unassigned]
22
629 - Other branches of engineering
14
511 - General principles of mathematics
13
025 - Library operations
9
501 - Philosophy & theory
7
610 - Medicine & health
7
410 - Linguistics
6
621 - Applied physics
6
630 - Agriculture & related technologies
5
570 - Life sciences; biology
4
612 - Human physiology
4
370 - Education
3
512 - Algebra
3
061 - Organizations in North America
2
160 - Logic
2
320 - Political science
2
516 - Geometry
2
620 - Engineering & allied operations
2
650 - Management & auxiliary services
2
658 - General management
2
808 - Rhetoric & collections of literature
2
001 - Knowledge
1
020 - Library & information sciences
1
033 - Encyclopedias in other Germanic languages
1
300 - Social sciences
1
301 - Sociology & anthropology
1
302 - Social interaction
1
306 - Culture & institutions
1
340 - Law
1
418 - Standard usage & applied linguistics
1
519 - Probabilities & applied mathematics
1
530 - Physics
1
571 - Physiology & related subjects
1
616 - Diseases
1