Classification
540 - Chemistry & allied sciences
620 - Engineering & allied operations
700 - The arts; fine & decorative arts
600 - Technology
42
363 - Other social problems & services
14
330 - Economics
13
333 - Economics of land & energy
12
000 - Computer science, information & general works
9
580 - Plants (Botany)
8
610 - Medicine & health
8
630 - Agriculture & related technologies
8
380 - Commerce, communications & transportation
6
500 - Natural sciences & mathematics
3
900 - History & geography
3
140 - Specific philosophical schools
2
300 - Social sciences
2
340 - Law
2
370 - Education
2
400 - Language
2
414 - Phonology & phonetics
2
530 - Physics
2
551 - Geology, hydrology & meteorology
2
720 - Architecture
2
100 - Philosophy & psychology
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
320 - Political science
1
576 - Genetics & evolution
1
657 - Accounting
1
658 - General management
1