Classification
363 - Other social problems & services
610 - Medicine & health
101
576 - Genetics & evolution
19
330 - Economics
12
500 - Natural sciences & mathematics
11
615 - Pharmacology & therapeutics
9
700 - The arts; fine & decorative arts
9
000 - Computer science, information & general works
7
551 - Geology, hydrology & meteorology
7
600 - Technology
7
380 - Commerce, communications & transportation
6
333 - Economics of land & energy
5
340 - Law
5
612 - Human physiology
5
140 - Specific philosophical schools
4
170 - Ethics
4
370 - Education
4
361 - Social problems & social welfare in general
3
540 - Chemistry & allied sciences
3
580 - Plants (Botany)
3
616 - Diseases
3
628 - Sanitary & municipal engineering
3
900 - History & geography
3
100 - Philosophy & psychology
2
338 - Production
2
620 - Engineering & allied operations
2
629 - Other branches of engineering
2
630 - Agriculture & related technologies
2
660 - Chemical engineering
2
025 - Library operations
1
362 - Social welfare problems & services
1
509 - Historical, geographic & persons treatment
1
574 - [Unassigned]
1
581 - Specific topics in natural history
1
613 - Personal health & safety
1
614 - Incidence & prevention of disease
1
618 - Gynecology, obstetrics, pediatrics & geriatrics
1
720 - Architecture
1
800 - Literature & rhetoric
1