Classification
720 - Architecture
700 - The arts; fine & decorative arts
61
900 - History & geography
48
600 - Technology
30
320 - Political science
29
000 - Computer science, information & general works
24
330 - Economics
24
363 - Other social problems & services
21
620 - Engineering & allied operations
21
333 - Economics of land & energy
20
380 - Commerce, communications & transportation
20
300 - Social sciences
19
140 - Specific philosophical schools
16
576 - Genetics & evolution
12
500 - Natural sciences & mathematics
11
370 - Education
9
610 - Medicine & health
9
100 - Philosophy & psychology
8
800 - Literature & rhetoric
8
340 - Law
7
301 - Sociology & anthropology
6
580 - Plants (Botany)
6
200 - Religion
5
630 - Agriculture & related technologies
4
770 - Photography, photographs & computer art
4
780 - Music
4
400 - Language
3
410 - Linguistics
3
414 - Phonology & phonetics
3
170 - Ethics
2
530 - Physics
2
551 - Geology, hydrology & meteorology
2
581 - Specific topics in natural history
2
696 - Utilities
2
004 - Data processing & computer science
1
120 - Epistemology, causation & humankind
1
297 - Islam, Babism & Bahai Faith
1
364 - Criminology
1
540 - Chemistry & allied sciences
1
657 - Accounting
1
658 - General management
1
741 - Drawing & drawings
1
745 - Decorative arts
1
791 - Public performances
1