Classification
700 - The arts; fine & decorative arts
330 - Economics
122
320 - Political science
65
333 - Economics of land & energy
33
900 - History & geography
30
600 - Technology
27
363 - Other social problems & services
26
140 - Specific philosophical schools
21
000 - Computer science, information & general works
19
300 - Social sciences
19
610 - Medicine & health
14
620 - Engineering & allied operations
13
630 - Agriculture & related technologies
12
340 - Law
10
380 - Commerce, communications & transportation
10
551 - Geology, hydrology & meteorology
9
658 - General management
8
301 - Sociology & anthropology
7
304 - Factors affecting social behavior
5
500 - Natural sciences & mathematics
5
576 - Genetics & evolution
5
100 - Philosophy & psychology
4
338 - Production
4
361 - Social problems & social welfare in general
4
200 - Religion
3
350 - Public administration & military science
3
370 - Education
3
400 - Language
3
530 - Physics
3
540 - Chemistry & allied sciences
3
160 - Logic
2
297 - Islam, Babism & Bahai Faith
2
332 - Financial economics
2
410 - Linguistics
2
580 - Plants (Botany)
2
581 - Specific topics in natural history
2
657 - Accounting
2
780 - Music
2
800 - Literature & rhetoric
2
001 - Knowledge
1
120 - Epistemology, causation & humankind
1
170 - Ethics
1
368 - Insurance
1
381 - Commerce
1
414 - Phonology & phonetics
1
520 - Astronomy & allied sciences
1
720 - Architecture
1