Classification
000 - Computer science, information & general works
380 - Commerce, communications & transportation
580 - Plants (Botany)
610 - Medicine & health
700 - The arts; fine & decorative arts
17
363 - Other social problems & services
14
333 - Economics of land & energy
12
140 - Specific philosophical schools
8
551 - Geology, hydrology & meteorology
7
600 - Technology
7
620 - Engineering & allied operations
7
612 - Human physiology
6
540 - Chemistry & allied sciences
5
576 - Genetics & evolution
5
630 - Agriculture & related technologies
5
330 - Economics
4
370 - Education
4
414 - Phonology & phonetics
4
500 - Natural sciences & mathematics
4
300 - Social sciences
3
581 - Specific topics in natural history
3
900 - History & geography
2
170 - Ethics
1
340 - Law
1
400 - Language
1
615 - Pharmacology & therapeutics
1
657 - Accounting
1
658 - General management
1
720 - Architecture
1
780 - Music
1
800 - Literature & rhetoric
1