Classification
320 - Political science
330 - Economics
333 - Economics of land & energy
363 - Other social problems & services
600 - Technology
620 - Engineering & allied operations
26
700 - The arts; fine & decorative arts
25
000 - Computer science, information & general works
20
551 - Geology, hydrology & meteorology
19
610 - Medicine & health
13
140 - Specific philosophical schools
12
380 - Commerce, communications & transportation
11
900 - History & geography
11
370 - Education
10
300 - Social sciences
8
581 - Specific topics in natural history
8
630 - Agriculture & related technologies
7
658 - General management
6
580 - Plants (Botany)
5
720 - Architecture
5
576 - Genetics & evolution
4
657 - Accounting
4
304 - Factors affecting social behavior
3
100 - Philosophy & psychology
2
200 - Religion
2
297 - Islam, Babism & Bahai Faith
2
340 - Law
2
350 - Public administration & military science
2
361 - Social problems & social welfare in general
2
800 - Literature & rhetoric
2
170 - Ethics
1
301 - Sociology & anthropology
1
336 - Public finance
1
400 - Language
1
410 - Linguistics
1
414 - Phonology & phonetics
1
520 - Astronomy & allied sciences
1
540 - Chemistry & allied sciences
1
650 - Management & auxiliary services
1