Classification
000 - Computer science, information & general works
363 - Other social problems & services
380 - Commerce, communications & transportation
610 - Medicine & health
700 - The arts; fine & decorative arts
25
333 - Economics of land & energy
20
140 - Specific philosophical schools
16
330 - Economics
15
580 - Plants (Botany)
14
600 - Technology
13
551 - Geology, hydrology & meteorology
11
576 - Genetics & evolution
9
620 - Engineering & allied operations
9
370 - Education
7
658 - General management
7
320 - Political science
6
540 - Chemistry & allied sciences
6
612 - Human physiology
6
720 - Architecture
6
300 - Social sciences
5
500 - Natural sciences & mathematics
5
581 - Specific topics in natural history
5
900 - History & geography
5
340 - Law
4
414 - Phonology & phonetics
4
630 - Agriculture & related technologies
4
304 - Factors affecting social behavior
3
800 - Literature & rhetoric
3
364 - Criminology
2
400 - Language
2
410 - Linguistics
2
100 - Philosophy & psychology
1
200 - Religion
1
361 - Social problems & social welfare in general
1
530 - Physics
1
550 - Earth sciences
1
657 - Accounting
1