Classification
333 - Economics of land & energy
720 - Architecture
700 - The arts; fine & decorative arts
87
600 - Technology
66
000 - Computer science, information & general works
58
900 - History & geography
57
620 - Engineering & allied operations
52
363 - Other social problems & services
50
330 - Economics
44
380 - Commerce, communications & transportation
36
610 - Medicine & health
28
320 - Political science
27
580 - Plants (Botany)
27
551 - Geology, hydrology & meteorology
24
576 - Genetics & evolution
21
140 - Specific philosophical schools
18
370 - Education
16
300 - Social sciences
12
800 - Literature & rhetoric
10
500 - Natural sciences & mathematics
9
630 - Agriculture & related technologies
9
340 - Law
6
540 - Chemistry & allied sciences
6
658 - General management
5
170 - Ethics
4
581 - Specific topics in natural history
4
400 - Language
3
414 - Phonology & phonetics
3
100 - Philosophy & psychology
2
612 - Human physiology
2
657 - Accounting
2
120 - Epistemology, causation & humankind
1
160 - Logic
1
297 - Islam, Babism & Bahai Faith
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
650 - Management & auxiliary services
1