Classification
370 - Education
610 - Medicine & health
304 - Factors affecting social behavior
225
330 - Economics
179
333 - Economics of land & energy
129
600 - Technology
102
320 - Political science
101
700 - The arts; fine & decorative arts
101
363 - Other social problems & services
86
380 - Commerce, communications & transportation
62
000 - Computer science, information & general works
60
140 - Specific philosophical schools
53
100 - Philosophy & psychology
50
900 - History & geography
43
300 - Social sciences
40
620 - Engineering & allied operations
26
400 - Language
19
658 - General management
18
580 - Plants (Botany)
17
170 - Ethics
15
551 - Geology, hydrology & meteorology
15
361 - Social problems & social welfare in general
11
500 - Natural sciences & mathematics
11
630 - Agriculture & related technologies
11
200 - Religion
10
340 - Law
10
301 - Sociology & anthropology
9
612 - Human physiology
9
720 - Architecture
9
780 - Music
9
360 - Social problems & services; associations
8
800 - Literature & rhetoric
8
576 - Genetics & evolution
7
581 - Specific topics in natural history
7
410 - Linguistics
6
362 - Social welfare problems & services
5
530 - Physics
5
520 - Astronomy & allied sciences
4
540 - Chemistry & allied sciences
4
615 - Pharmacology & therapeutics
4
657 - Accounting
3
120 - Epistemology, causation & humankind
2
336 - Public finance
2
350 - Public administration & military science
2
364 - Criminology
2
371 - Schools & their activities; special education
2
372 - Elementary education
2
770 - Photography, photographs & computer art
2
160 - Logic
1
297 - Islam, Babism & Bahai Faith
1
more ...