Classification
720 - Architecture
000 - Computer science, information & general works
116
700 - The arts; fine & decorative arts
69
600 - Technology
57
333 - Economics of land & energy
52
620 - Engineering & allied operations
40
330 - Economics
35
900 - History & geography
33
363 - Other social problems & services
32
580 - Plants (Botany)
26
380 - Commerce, communications & transportation
23
610 - Medicine & health
20
576 - Genetics & evolution
18
140 - Specific philosophical schools
15
320 - Political science
15
400 - Language
13
551 - Geology, hydrology & meteorology
13
500 - Natural sciences & mathematics
12
630 - Agriculture & related technologies
12
370 - Education
11
658 - General management
7
414 - Phonology & phonetics
6
540 - Chemistry & allied sciences
6
800 - Literature & rhetoric
5
300 - Social sciences
4
530 - Physics
3
745 - Decorative arts
3
100 - Philosophy & psychology
2
340 - Law
2
581 - Specific topics in natural history
2
657 - Accounting
2
696 - Utilities
2
741 - Drawing & drawings
2
780 - Music
2
001 - Knowledge
1
004 - Data processing & computer science
1
160 - Logic
1
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
304 - Factors affecting social behavior
1
410 - Linguistics
1
550 - Earth sciences
1
612 - Human physiology
1
770 - Photography, photographs & computer art
1