Classification
720 - Architecture
333 - Economics of land & energy
80
700 - The arts; fine & decorative arts
56
600 - Technology
50
900 - History & geography
43
620 - Engineering & allied operations
39
696 - Utilities
36
000 - Computer science, information & general works
34
363 - Other social problems & services
32
330 - Economics
30
380 - Commerce, communications & transportation
22
610 - Medicine & health
18
576 - Genetics & evolution
15
551 - Geology, hydrology & meteorology
12
580 - Plants (Botany)
11
370 - Education
10
320 - Political science
8
140 - Specific philosophical schools
7
800 - Literature & rhetoric
7
630 - Agriculture & related technologies
6
170 - Ethics
4
340 - Law
4
540 - Chemistry & allied sciences
4
500 - Natural sciences & mathematics
3
658 - General management
3
300 - Social sciences
2
400 - Language
2
414 - Phonology & phonetics
2
657 - Accounting
2
001 - Knowledge
1
100 - Philosophy & psychology
1
120 - Epistemology, causation & humankind
1
160 - Logic
1
297 - Islam, Babism & Bahai Faith
1
650 - Management & auxiliary services
1
745 - Decorative arts
1