Classification
140 - Specific philosophical schools
600 - Technology
700 - The arts; fine & decorative arts
620 - Engineering & allied operations
106
900 - History & geography
88
000 - Computer science, information & general works
77
610 - Medicine & health
74
333 - Economics of land & energy
59
363 - Other social problems & services
59
330 - Economics
52
380 - Commerce, communications & transportation
47
320 - Political science
30
580 - Plants (Botany)
25
340 - Law
18
370 - Education
18
576 - Genetics & evolution
17
630 - Agriculture & related technologies
17
720 - Architecture
15
400 - Language
14
551 - Geology, hydrology & meteorology
14
170 - Ethics
13
500 - Natural sciences & mathematics
13
100 - Philosophy & psychology
11
658 - General management
11
581 - Specific topics in natural history
10
612 - Human physiology
10
800 - Literature & rhetoric
10
300 - Social sciences
9
304 - Factors affecting social behavior
9
200 - Religion
8
540 - Chemistry & allied sciences
8
361 - Social problems & social welfare in general
6
530 - Physics
6
414 - Phonology & phonetics
5
301 - Sociology & anthropology
4
410 - Linguistics
4
780 - Music
4
615 - Pharmacology & therapeutics
3
120 - Epistemology, causation & humankind
2
160 - Logic
1
297 - Islam, Babism & Bahai Faith
1
338 - Production
1
350 - Public administration & military science
1
364 - Criminology
1
657 - Accounting
1
770 - Photography, photographs & computer art
1