Classification
621 - Applied physics
274
006 - Special computer methods
82
620 - Engineering & allied operations
48
005 - Computer programming, programs & data
34
700 - The arts; fine & decorative arts
33
600 - Technology
32
004 - Data processing & computer science
29
629 - Other branches of engineering
24
900 - History & geography
24
333 - Economics of land & energy
23
330 - Economics
18
670 - Manufacturing
18
000 - Computer science, information & general works
16
380 - Commerce, communications & transportation
16
658 - General management
14
140 - Specific philosophical schools
13
610 - Medicine & health
12
530 - Physics
8
321 - Systems of governments & states
7
363 - Other social problems & services
7
003 - Systems
6
576 - Genetics & evolution
6
690 - Buildings
6
720 - Architecture
6
500 - Natural sciences & mathematics
5
580 - Plants (Botany)
5
630 - Agriculture & related technologies
5
304 - Factors affecting social behavior
3
340 - Law
3
370 - Education
3
540 - Chemistry & allied sciences
3
910 - Geography & travel
3
323 - Civil & political rights
2
400 - Language
2
800 - Literature & rhetoric
2
170 - Ethics
1
303 - Social processes
1
320 - Political science
1
341 - Law of nations
1
361 - Social problems & social welfare in general
1
515 - Analysis
1
551 - Geology, hydrology & meteorology
1
571 - Physiology & related subjects
1
581 - Specific topics in natural history
1
612 - Human physiology
1