Classification
600 - Technology
610 - Medicine & health
612 - Human physiology
700 - The arts; fine & decorative arts
14
000 - Computer science, information & general works
7
620 - Engineering & allied operations
6
140 - Specific philosophical schools
5
363 - Other social problems & services
5
333 - Economics of land & energy
4
380 - Commerce, communications & transportation
4
580 - Plants (Botany)
4
500 - Natural sciences & mathematics
3
540 - Chemistry & allied sciences
3
630 - Agriculture & related technologies
3
900 - History & geography
3
576 - Genetics & evolution
2
170 - Ethics
1
320 - Political science
1
330 - Economics
1
340 - Law
1
350 - Public administration & military science
1
361 - Social problems & social welfare in general
1
370 - Education
1
414 - Phonology & phonetics
1
551 - Geology, hydrology & meteorology
1
581 - Specific topics in natural history
1
615 - Pharmacology & therapeutics
1
780 - Music
1