Classification
610 - Medicine & health
1,439
330 - Economics
140
700 - The arts; fine & decorative arts
102
100 - Philosophy & psychology
46
580 - Plants (Botany)
46
140 - Specific philosophical schools
39
370 - Education
28
576 - Genetics & evolution
27
380 - Commerce, communications & transportation
26
363 - Other social problems & services
17
612 - Human physiology
16
361 - Social problems & social welfare in general
13
000 - Computer science, information & general works
12
600 - Technology
12
616 - Diseases
12
170 - Ethics
11
362 - Social welfare problems & services
11
900 - History & geography
11
540 - Chemistry & allied sciences
9
800 - Literature & rhetoric
8
333 - Economics of land & energy
6
551 - Geology, hydrology & meteorology
6
620 - Engineering & allied operations
6
615 - Pharmacology & therapeutics
5
630 - Agriculture & related technologies
5
200 - Religion
4
340 - Law
4
581 - Specific topics in natural history
3
372 - Elementary education
2
400 - Language
2
001 - Knowledge
1
300 - Social sciences
1
344 - Labor, social, education & cultural law
1
353 - Specific fields of public administration
1
365 - Penal & related institutions
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
613 - Personal health & safety
1
658 - General management
1