Classification
620 - Engineering & allied operations
600 - Technology
52
900 - History & geography
44
700 - The arts; fine & decorative arts
31
000 - Computer science, information & general works
27
333 - Economics of land & energy
16
363 - Other social problems & services
16
610 - Medicine & health
14
380 - Commerce, communications & transportation
11
140 - Specific philosophical schools
9
630 - Agriculture & related technologies
9
330 - Economics
8
400 - Language
8
500 - Natural sciences & mathematics
6
658 - General management
6
576 - Genetics & evolution
5
580 - Plants (Botany)
5
720 - Architecture
5
370 - Education
4
800 - Literature & rhetoric
4
170 - Ethics
3
300 - Social sciences
3
320 - Political science
3
410 - Linguistics
3
120 - Epistemology, causation & humankind
2
340 - Law
2
414 - Phonology & phonetics
2
530 - Physics
2
770 - Photography, photographs & computer art
2
100 - Philosophy & psychology
1
200 - Religion
1
304 - Factors affecting social behavior
1
550 - Earth sciences
1
657 - Accounting
1
780 - Music
1