Classification
500 - Natural sciences & mathematics
610 - Medicine & health
620 - Engineering & allied operations
26
600 - Technology
18
700 - The arts; fine & decorative arts
15
333 - Economics of land & energy
13
000 - Computer science, information & general works
11
363 - Other social problems & services
10
380 - Commerce, communications & transportation
10
900 - History & geography
10
551 - Geology, hydrology & meteorology
7
576 - Genetics & evolution
7
580 - Plants (Botany)
7
140 - Specific philosophical schools
6
540 - Chemistry & allied sciences
5
300 - Social sciences
4
370 - Education
4
414 - Phonology & phonetics
4
612 - Human physiology
4
100 - Philosophy & psychology
3
330 - Economics
3
581 - Specific topics in natural history
3
630 - Agriculture & related technologies
3
657 - Accounting
2
720 - Architecture
2
800 - Literature & rhetoric
2
320 - Political science
1
340 - Law
1
400 - Language
1
410 - Linguistics
1
519 - Probabilities & applied mathematics
1
530 - Physics
1