Classification
700 - The arts; fine & decorative arts
900 - History & geography
600 - Technology
68
620 - Engineering & allied operations
67
333 - Economics of land & energy
42
000 - Computer science, information & general works
32
380 - Commerce, communications & transportation
21
140 - Specific philosophical schools
19
330 - Economics
19
363 - Other social problems & services
19
576 - Genetics & evolution
16
610 - Medicine & health
15
580 - Plants (Botany)
12
370 - Education
11
800 - Literature & rhetoric
10
100 - Philosophy & psychology
9
340 - Law
9
720 - Architecture
9
500 - Natural sciences & mathematics
8
320 - Political science
6
400 - Language
6
414 - Phonology & phonetics
6
530 - Physics
6
540 - Chemistry & allied sciences
6
300 - Social sciences
5
551 - Geology, hydrology & meteorology
5
200 - Religion
4
630 - Agriculture & related technologies
4
304 - Factors affecting social behavior
3
658 - General management
3
770 - Photography, photographs & computer art
3
410 - Linguistics
2
780 - Music
2
120 - Epistemology, causation & humankind
1
170 - Ethics
1
297 - Islam, Babism & Bahai Faith
1
520 - Astronomy & allied sciences
1
581 - Specific topics in natural history
1
612 - Human physiology
1
657 - Accounting
1
791 - Public performances
1