Classification
610 - Medicine & health
300 - Social sciences
35
100 - Philosophy & psychology
34
700 - The arts; fine & decorative arts
29
333 - Economics of land & energy
26
140 - Specific philosophical schools
21
320 - Political science
21
900 - History & geography
21
363 - Other social problems & services
19
370 - Education
19
330 - Economics
18
301 - Sociology & anthropology
16
580 - Plants (Botany)
15
600 - Technology
15
540 - Chemistry & allied sciences
13
620 - Engineering & allied operations
13
380 - Commerce, communications & transportation
11
340 - Law
9
612 - Human physiology
9
000 - Computer science, information & general works
7
170 - Ethics
7
200 - Religion
7
581 - Specific topics in natural history
7
304 - Factors affecting social behavior
6
551 - Geology, hydrology & meteorology
6
800 - Literature & rhetoric
6
361 - Social problems & social welfare in general
5
658 - General management
4
364 - Criminology
3
500 - Natural sciences & mathematics
3
576 - Genetics & evolution
3
615 - Pharmacology & therapeutics
3
630 - Agriculture & related technologies
3
720 - Architecture
3
770 - Photography, photographs & computer art
3
360 - Social problems & services; associations
2
400 - Language
2
590 - Animals (Zoology)
2
297 - Islam, Babism & Bahai Faith
1
302 - Social interaction
1
338 - Production
1
410 - Linguistics
1
414 - Phonology & phonetics
1
519 - Probabilities & applied mathematics
1
520 - Astronomy & allied sciences
1
602 - Miscellany
1
780 - Music
1
791 - Public performances
1