Classification
610 - Medicine & health
300 - Social sciences
48
100 - Philosophy & psychology
43
900 - History & geography
37
700 - The arts; fine & decorative arts
32
333 - Economics of land & energy
27
140 - Specific philosophical schools
24
370 - Education
24
301 - Sociology & anthropology
22
320 - Political science
22
600 - Technology
21
330 - Economics
20
363 - Other social problems & services
20
580 - Plants (Botany)
15
540 - Chemistry & allied sciences
13
620 - Engineering & allied operations
13
380 - Commerce, communications & transportation
12
800 - Literature & rhetoric
12
170 - Ethics
11
340 - Law
11
500 - Natural sciences & mathematics
9
612 - Human physiology
9
000 - Computer science, information & general works
8
200 - Religion
8
581 - Specific topics in natural history
7
297 - Islam, Babism & Bahai Faith
6
304 - Factors affecting social behavior
6
551 - Geology, hydrology & meteorology
6
361 - Social problems & social welfare in general
5
400 - Language
5
590 - Animals (Zoology)
4
658 - General management
4
364 - Criminology
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
410 - Linguistics
2
120 - Epistemology, causation & humankind
1
302 - Social interaction
1
338 - Production
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