Classification
600 - Technology
26
700 - The arts; fine & decorative arts
22
333 - Economics of land & energy
21
900 - History & geography
20
620 - Engineering & allied operations
19
000 - Computer science, information & general works
16
380 - Commerce, communications & transportation
9
610 - Medicine & health
9
330 - Economics
6
340 - Law
5
140 - Specific philosophical schools
4
363 - Other social problems & services
4
630 - Agriculture & related technologies
4
658 - General management
4
530 - Physics
3
576 - Genetics & evolution
3
580 - Plants (Botany)
3
720 - Architecture
3
500 - Natural sciences & mathematics
2
400 - Language
1
410 - Linguistics
1
414 - Phonology & phonetics
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
581 - Specific topics in natural history
1
770 - Photography, photographs & computer art
1
800 - Literature & rhetoric
1