Classification
330 - Economics
600 - Technology
700 - The arts; fine & decorative arts
333 - Economics of land & energy
48
620 - Engineering & allied operations
32
000 - Computer science, information & general works
31
363 - Other social problems & services
30
900 - History & geography
26
380 - Commerce, communications & transportation
18
320 - Political science
16
610 - Medicine & health
14
140 - Specific philosophical schools
12
576 - Genetics & evolution
12
370 - Education
10
500 - Natural sciences & mathematics
9
658 - General management
9
720 - Architecture
9
580 - Plants (Botany)
7
400 - Language
6
551 - Geology, hydrology & meteorology
5
630 - Agriculture & related technologies
5
100 - Philosophy & psychology
4
300 - Social sciences
4
340 - Law
4
581 - Specific topics in natural history
4
800 - Literature & rhetoric
4
530 - Physics
3
297 - Islam, Babism & Bahai Faith
2
350 - Public administration & military science
2
361 - Social problems & social welfare in general
2
410 - Linguistics
2
414 - Phonology & phonetics
2
657 - Accounting
2
160 - Logic
1
170 - Ethics
1
200 - Religion
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
520 - Astronomy & allied sciences
1
540 - Chemistry & allied sciences
1
612 - Human physiology
1
650 - Management & auxiliary services
1
791 - Public performances
1