Classification
380 - Commerce, communications & transportation
14
500 - Natural sciences & mathematics
610 - Medicine & health
333 - Economics of land & energy
10
700 - The arts; fine & decorative arts
9
000 - Computer science, information & general works
8
600 - Technology
8
620 - Engineering & allied operations
8
576 - Genetics & evolution
7
140 - Specific philosophical schools
6
363 - Other social problems & services
5
580 - Plants (Botany)
5
540 - Chemistry & allied sciences
4
612 - Human physiology
4
900 - History & geography
4
300 - Social sciences
3
330 - Economics
3
414 - Phonology & phonetics
3
551 - Geology, hydrology & meteorology
3
581 - Specific topics in natural history
3
340 - Law
2
410 - Linguistics
1
615 - Pharmacology & therapeutics
1
658 - General management
1