Classification
620 - Engineering & allied operations
600 - Technology
34
900 - History & geography
33
700 - The arts; fine & decorative arts
28
333 - Economics of land & energy
16
000 - Computer science, information & general works
13
576 - Genetics & evolution
9
500 - Natural sciences & mathematics
8
510 - Mathematics
7
363 - Other social problems & services
6
414 - Phonology & phonetics
5
340 - Law
4
518 - Numerical analysis
4
530 - Physics
4
610 - Medicine & health
3
330 - Economics
2
540 - Chemistry & allied sciences
2
580 - Plants (Botany)
2
720 - Architecture
2
800 - Literature & rhetoric
2
005 - Computer programming, programs & data
1
140 - Specific philosophical schools
1
153 - Mental processes & intelligence
1
380 - Commerce, communications & transportation
1
537 - Electricity & electronics
1
621 - Applied physics
1
660 - Chemical engineering
1
770 - Photography, photographs & computer art
1