Classification
140 - Specific philosophical schools
610 - Medicine & health
620 - Engineering & allied operations
700 - The arts; fine & decorative arts
47
600 - Technology
46
900 - History & geography
28
333 - Economics of land & energy
27
000 - Computer science, information & general works
25
363 - Other social problems & services
22
380 - Commerce, communications & transportation
18
580 - Plants (Botany)
16
330 - Economics
13
540 - Chemistry & allied sciences
10
576 - Genetics & evolution
9
630 - Agriculture & related technologies
8
300 - Social sciences
6
340 - Law
6
500 - Natural sciences & mathematics
6
551 - Geology, hydrology & meteorology
6
400 - Language
5
414 - Phonology & phonetics
5
720 - Architecture
5
170 - Ethics
4
370 - Education
4
581 - Specific topics in natural history
4
612 - Human physiology
4
658 - General management
4
800 - Literature & rhetoric
4
304 - Factors affecting social behavior
3
361 - Social problems & social welfare in general
3
100 - Philosophy & psychology
2
297 - Islam, Babism & Bahai Faith
2
200 - Religion
1
301 - Sociology & anthropology
1
320 - Political science
1
410 - Linguistics
1
530 - Physics
1
615 - Pharmacology & therapeutics
1