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
163
363 - Other social problems & services
134
600 - Technology
126
330 - Economics
115
380 - Commerce, communications & transportation
99
580 - Plants (Botany)
89
900 - History & geography
74
620 - Engineering & allied operations
71
370 - Education
53
304 - Factors affecting social behavior
45
540 - Chemistry & allied sciences
45
320 - Political science
43
576 - Genetics & evolution
42
300 - Social sciences
34
340 - Law
34
170 - Ethics
33
500 - Natural sciences & mathematics
30
551 - Geology, hydrology & meteorology
30
615 - Pharmacology & therapeutics
29
612 - Human physiology
28
100 - Philosophy & psychology
26
630 - Agriculture & related technologies
25
800 - Literature & rhetoric
25
301 - Sociology & anthropology
22
581 - Specific topics in natural history
22
658 - General management
22
400 - Language
19
414 - Phonology & phonetics
18
361 - Social problems & social welfare in general
15
200 - Religion
11
530 - Physics
10
720 - Architecture
10
410 - Linguistics
9
780 - Music
4
590 - Animals (Zoology)
3
297 - Islam, Babism & Bahai Faith
2
350 - Public administration & military science
2
360 - Social problems & services; associations
2
657 - Accounting
2
770 - Photography, photographs & computer art
2
791 - Public performances
2
120 - Epistemology, causation & humankind
1
174 - Occupational ethics
1
241 - Christian ethics
1
338 - Production
1
364 - Criminology
1
more ...