Classification
340 - Law
500 - Natural sciences & mathematics
600 - Technology
620 - Engineering & allied operations
16
900 - History & geography
12
700 - The arts; fine & decorative arts
11
333 - Economics of land & energy
9
380 - Commerce, communications & transportation
9
363 - Other social problems & services
7
330 - Economics
5
576 - Genetics & evolution
5
140 - Specific philosophical schools
4
000 - Computer science, information & general works
3
320 - Political science
3
530 - Physics
3
580 - Plants (Botany)
3
720 - Architecture
3
610 - Medicine & health
2
300 - Social sciences
1
370 - Education
1
400 - Language
1
414 - Phonology & phonetics
1
540 - Chemistry & allied sciences
1
630 - Agriculture & related technologies
1