Classification
333 - Economics of land & energy
380 - Commerce, communications & transportation
190
700 - The arts; fine & decorative arts
100
600 - Technology
95
620 - Engineering & allied operations
79
000 - Computer science, information & general works
78
900 - History & geography
68
330 - Economics
57
610 - Medicine & health
44
363 - Other social problems & services
41
320 - Political science
34
370 - Education
34
140 - Specific philosophical schools
32
720 - Architecture
18
576 - Genetics & evolution
16
530 - Physics
14
630 - Agriculture & related technologies
14
580 - Plants (Botany)
13
400 - Language
12
551 - Geology, hydrology & meteorology
12
800 - Literature & rhetoric
12
300 - Social sciences
10
340 - Law
10
500 - Natural sciences & mathematics
10
540 - Chemistry & allied sciences
10
658 - General management
10
100 - Philosophy & psychology
9
302 - Social interaction
7
304 - Factors affecting social behavior
7
170 - Ethics
4
361 - Social problems & social welfare in general
4
581 - Specific topics in natural history
4
410 - Linguistics
3
612 - Human physiology
3
615 - Pharmacology & therapeutics
3
780 - Music
3
297 - Islam, Babism & Bahai Faith
2
301 - Sociology & anthropology
2
414 - Phonology & phonetics
2
200 - Religion
1
350 - Public administration & military science
1
657 - Accounting
1