Classification
333 - Economics of land & energy
11
600 - Technology
11
700 - The arts; fine & decorative arts
11
363 - Other social problems & services
10
000 - Computer science, information & general works
9
330 - Economics
8
900 - History & geography
7
380 - Commerce, communications & transportation
6
610 - Medicine & health
6
140 - Specific philosophical schools
5
340 - Law
5
620 - Engineering & allied operations
5
580 - Plants (Botany)
4
410 - Linguistics
3
551 - Geology, hydrology & meteorology
3
576 - Genetics & evolution
3
630 - Agriculture & related technologies
3
658 - General management
3
800 - Literature & rhetoric
3
170 - Ethics
2
300 - Social sciences
2
320 - Political science
2
400 - Language
2
720 - Architecture
2
297 - Islam, Babism & Bahai Faith
1
350 - Public administration & military science
1
361 - Social problems & social welfare in general
1
364 - Criminology
1
370 - Education
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
540 - Chemistry & allied sciences
1
612 - Human physiology
1
657 - Accounting
1