Classification
620 - Engineering & allied operations
500 - Natural sciences & mathematics
82
621 - Applied physics
54
000 - Computer science, information & general works
32
600 - Technology
23
380 - Commerce, communications & transportation
22
333 - Economics of land & energy
21
700 - The arts; fine & decorative arts
17
745 - Decorative arts
16
330 - Economics
14
384 - Communications; telecommunication
13
004 - Data processing & computer science
12
006 - Special computer methods
12
331 - Labor economics
11
658 - General management
9
530 - Physics
7
540 - Chemistry & allied sciences
6
610 - Medicine & health
6
510 - Mathematics
5
778 - Fields & kinds of photography
5
005 - Computer programming, programs & data
4
140 - Specific philosophical schools
4
363 - Other social problems & services
4
629 - Other branches of engineering
4
781 - General principles & musical forms
4
900 - History & geography
4
320 - Political science
2
370 - Education
2
374 - Adult education
2
537 - Electricity & electronics
2
720 - Architecture
2
770 - Photography, photographs & computer art
2
794 - Indoor games of skill
2
100 - Philosophy & psychology
1
302 - Social interaction
1
303 - Social processes
1
338 - Production
1
350 - Public administration & military science
1
381 - Commerce
1
400 - Language
1
410 - Linguistics
1
519 - Probabilities & applied mathematics
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
650 - Management & auxiliary services
1
777 - [Unassigned]
1
791 - Public performances
1
800 - Literature & rhetoric
1