Classification
400 - Language
000 - Computer science, information & general works
51
700 - The arts; fine & decorative arts
48
600 - Technology
45
620 - Engineering & allied operations
25
900 - History & geography
24
140 - Specific philosophical schools
23
610 - Medicine & health
23
380 - Commerce, communications & transportation
22
333 - Economics of land & energy
18
410 - Linguistics
16
330 - Economics
15
370 - Education
14
720 - Architecture
13
363 - Other social problems & services
12
576 - Genetics & evolution
10
100 - Philosophy & psychology
9
500 - Natural sciences & mathematics
8
320 - Political science
7
580 - Plants (Botany)
7
300 - Social sciences
4
658 - General management
4
301 - Sociology & anthropology
3
414 - Phonology & phonetics
3
551 - Geology, hydrology & meteorology
3
581 - Specific topics in natural history
3
340 - Law
2
530 - Physics
2
540 - Chemistry & allied sciences
2
615 - Pharmacology & therapeutics
2
630 - Agriculture & related technologies
2
160 - Logic
1
170 - Ethics
1
200 - Religion
1
360 - Social problems & services; associations
1
780 - Music
1
800 - Literature & rhetoric
1