Classification
140 - Specific philosophical schools
500 - Natural sciences & mathematics
610 - Medicine & health
700 - The arts; fine & decorative arts
000 - Computer science, information & general works
11
333 - Economics of land & energy
6
380 - Commerce, communications & transportation
6
330 - Economics
5
363 - Other social problems & services
4
540 - Chemistry & allied sciences
4
576 - Genetics & evolution
4
600 - Technology
4
612 - Human physiology
4
620 - Engineering & allied operations
4
300 - Social sciences
3
414 - Phonology & phonetics
3
551 - Geology, hydrology & meteorology
3
580 - Plants (Botany)
3
581 - Specific topics in natural history
3
658 - General management
3
320 - Political science
1
340 - Law
1
361 - Social problems & social welfare in general
1
370 - Education
1
400 - Language
1
630 - Agriculture & related technologies
1
900 - History & geography
1