Classification
300 - Social sciences
333 - Economics of land & energy
320 - Political science
96
330 - Economics
73
363 - Other social problems & services
53
900 - History & geography
41
600 - Technology
38
370 - Education
37
140 - Specific philosophical schools
32
610 - Medicine & health
31
100 - Philosophy & psychology
29
700 - The arts; fine & decorative arts
25
301 - Sociology & anthropology
24
620 - Engineering & allied operations
23
340 - Law
19
170 - Ethics
16
000 - Computer science, information & general works
15
551 - Geology, hydrology & meteorology
15
581 - Specific topics in natural history
15
380 - Commerce, communications & transportation
14
630 - Agriculture & related technologies
13
304 - Factors affecting social behavior
12
576 - Genetics & evolution
11
500 - Natural sciences & mathematics
10
200 - Religion
8
720 - Architecture
8
580 - Plants (Botany)
7
800 - Literature & rhetoric
6
400 - Language
4
540 - Chemistry & allied sciences
4
658 - General management
4
350 - Public administration & military science
3
361 - Social problems & social welfare in general
3
414 - Phonology & phonetics
3
612 - Human physiology
3
657 - Accounting
2
120 - Epistemology, causation & humankind
1
296 - Judaism
1
297 - Islam, Babism & Bahai Faith
1
338 - Production
1
360 - Social problems & services; associations
1
398 - Folklore
1
530 - Physics
1
650 - Management & auxiliary services
1
770 - Photography, photographs & computer art
1
780 - Music
1