Classification
600 - Technology
610 - Medicine & health
700 - The arts; fine & decorative arts
33
620 - Engineering & allied operations
26
140 - Specific philosophical schools
20
333 - Economics of land & energy
19
363 - Other social problems & services
18
900 - History & geography
18
000 - Computer science, information & general works
16
380 - Commerce, communications & transportation
14
330 - Economics
11
400 - Language
8
580 - Plants (Botany)
8
100 - Philosophy & psychology
6
540 - Chemistry & allied sciences
6
370 - Education
5
630 - Agriculture & related technologies
5
170 - Ethics
4
320 - Political science
4
340 - Law
4
500 - Natural sciences & mathematics
4
800 - Literature & rhetoric
4
304 - Factors affecting social behavior
2
414 - Phonology & phonetics
2
551 - Geology, hydrology & meteorology
2
576 - Genetics & evolution
2
581 - Specific topics in natural history
2
612 - Human physiology
2
720 - Architecture
2
200 - Religion
1
300 - Social sciences
1
350 - Public administration & military science
1
361 - Social problems & social welfare in general
1
530 - Physics
1
658 - General management
1