Classification
400 - Language
600 - Technology
000 - Computer science, information & general works
61
700 - The arts; fine & decorative arts
57
620 - Engineering & allied operations
45
900 - History & geography
42
370 - Education
37
410 - Linguistics
32
140 - Specific philosophical schools
29
380 - Commerce, communications & transportation
28
330 - Economics
27
610 - Medicine & health
21
333 - Economics of land & energy
20
363 - Other social problems & services
20
576 - Genetics & evolution
16
300 - Social sciences
15
100 - Philosophy & psychology
10
720 - Architecture
10
800 - Literature & rhetoric
10
320 - Political science
9
340 - Law
8
580 - Plants (Botany)
8
630 - Agriculture & related technologies
8
500 - Natural sciences & mathematics
7
530 - Physics
5
780 - Music
5
540 - Chemistry & allied sciences
4
658 - General management
4
301 - Sociology & anthropology
3
414 - Phonology & phonetics
3
551 - Geology, hydrology & meteorology
3
304 - Factors affecting social behavior
2
581 - Specific topics in natural history
2
120 - Epistemology, causation & humankind
1
160 - Logic
1
170 - Ethics
1
200 - Religion
1
550 - Earth sciences
1
615 - Pharmacology & therapeutics
1
657 - Accounting
1