Classification
140 - Specific philosophical schools
610 - Medicine & health
700 - The arts; fine & decorative arts
278
000 - Computer science, information & general works
178
333 - Economics of land & energy
167
363 - Other social problems & services
131
600 - Technology
127
330 - Economics
110
380 - Commerce, communications & transportation
98
580 - Plants (Botany)
89
900 - History & geography
72
620 - Engineering & allied operations
70
370 - Education
56
320 - Political science
44
540 - Chemistry & allied sciences
44
304 - Factors affecting social behavior
42
576 - Genetics & evolution
42
170 - Ethics
33
340 - Law
31
300 - Social sciences
30
551 - Geology, hydrology & meteorology
30
612 - Human physiology
29
615 - Pharmacology & therapeutics
29
500 - Natural sciences & mathematics
28
100 - Philosophy & psychology
26
630 - Agriculture & related technologies
25
400 - Language
22
581 - Specific topics in natural history
22
658 - General management
22
800 - Literature & rhetoric
22
301 - Sociology & anthropology
19
414 - Phonology & phonetics
18
361 - Social problems & social welfare in general
15
200 - Religion
10
530 - Physics
10
410 - Linguistics
8
720 - Architecture
8
360 - Social problems & services; associations
3
780 - Music
3
791 - Public performances
3
120 - Epistemology, causation & humankind
2
350 - Public administration & military science
2
550 - Earth sciences
2
657 - Accounting
2
770 - Photography, photographs & computer art
2
174 - Occupational ethics
1
241 - Christian ethics
1
297 - Islam, Babism & Bahai Faith
1
338 - Production
1
398 - Folklore
1
more ...