Classification
500 - Natural sciences & mathematics
610 - Medicine & health
620 - Engineering & allied operations
600 - Technology
19
333 - Economics of land & energy
11
700 - The arts; fine & decorative arts
11
900 - History & geography
11
000 - Computer science, information & general works
9
380 - Commerce, communications & transportation
9
576 - Genetics & evolution
7
580 - Plants (Botany)
7
140 - Specific philosophical schools
6
363 - Other social problems & services
6
540 - Chemistry & allied sciences
6
551 - Geology, hydrology & meteorology
5
581 - Specific topics in natural history
5
300 - Social sciences
4
370 - Education
4
414 - Phonology & phonetics
4
612 - Human physiology
4
100 - Philosophy & psychology
3
630 - Agriculture & related technologies
3
330 - Economics
2
657 - Accounting
2
720 - Architecture
2
170 - Ethics
1
320 - Political science
1
340 - Law
1
400 - Language
1
410 - Linguistics
1
519 - Probabilities & applied mathematics
1
530 - Physics
1