Classification
576 - Genetics & evolution
600 - Technology
18
700 - The arts; fine & decorative arts
18
620 - Engineering & allied operations
16
900 - History & geography
15
333 - Economics of land & energy
9
363 - Other social problems & services
9
000 - Computer science, information & general works
6
340 - Law
5
414 - Phonology & phonetics
5
380 - Commerce, communications & transportation
4
140 - Specific philosophical schools
3
320 - Political science
3
500 - Natural sciences & mathematics
3
580 - Plants (Botany)
3
720 - Architecture
3
330 - Economics
2
610 - Medicine & health
2
630 - Agriculture & related technologies
2
304 - Factors affecting social behavior
1
540 - Chemistry & allied sciences
1
615 - Pharmacology & therapeutics
1
658 - General management
1