Classification
000 - Computer science, information & general works
380 - Commerce, communications & transportation
333 - Economics of land & energy
10
363 - Other social problems & services
7
576 - Genetics & evolution
6
620 - Engineering & allied operations
6
700 - The arts; fine & decorative arts
6
140 - Specific philosophical schools
5
500 - Natural sciences & mathematics
5
600 - Technology
5
330 - Economics
4
551 - Geology, hydrology & meteorology
4
610 - Medicine & health
4
300 - Social sciences
3
414 - Phonology & phonetics
3
540 - Chemistry & allied sciences
3
580 - Plants (Botany)
3
581 - Specific topics in natural history
3
612 - Human physiology
3
900 - History & geography
3
320 - Political science
2
658 - General management
2
340 - Law
1
361 - Social problems & social welfare in general
1
364 - Criminology
1
530 - Physics
1