Classification
320 - Political science
330 - Economics
600 - Technology
700 - The arts; fine & decorative arts
333 - Economics of land & energy
40
000 - Computer science, information & general works
26
363 - Other social problems & services
26
900 - History & geography
26
620 - Engineering & allied operations
22
380 - Commerce, communications & transportation
17
551 - Geology, hydrology & meteorology
14
140 - Specific philosophical schools
12
370 - Education
12
300 - Social sciences
11
610 - Medicine & health
11
630 - Agriculture & related technologies
11
658 - General management
9
720 - Architecture
7
100 - Philosophy & psychology
6
576 - Genetics & evolution
5
580 - Plants (Botany)
5
400 - Language
4
581 - Specific topics in natural history
4
657 - Accounting
4
780 - Music
4
800 - Literature & rhetoric
4
410 - Linguistics
3
530 - Physics
3
297 - Islam, Babism & Bahai Faith
2
304 - Factors affecting social behavior
2
361 - Social problems & social welfare in general
2
414 - Phonology & phonetics
2
770 - Photography, photographs & computer art
2
170 - Ethics
1
200 - Religion
1
301 - Sociology & anthropology
1
340 - Law
1
360 - Social problems & services; associations
1
500 - Natural sciences & mathematics
1
520 - Astronomy & allied sciences
1
603 - Dictionaries & encyclopedias
1
650 - Management & auxiliary services
1