Classification
330 - Economics
620 - Engineering & allied operations
600 - Technology
46
333 - Economics of land & energy
36
700 - The arts; fine & decorative arts
35
900 - History & geography
32
363 - Other social problems & services
22
000 - Computer science, information & general works
21
380 - Commerce, communications & transportation
12
140 - Specific philosophical schools
10
320 - Political science
10
610 - Medicine & health
10
576 - Genetics & evolution
9
720 - Architecture
8
658 - General management
7
370 - Education
6
400 - Language
6
580 - Plants (Botany)
6
630 - Agriculture & related technologies
5
500 - Natural sciences & mathematics
4
551 - Geology, hydrology & meteorology
4
800 - Literature & rhetoric
4
300 - Social sciences
3
100 - Philosophy & psychology
2
170 - Ethics
2
530 - Physics
2
581 - Specific topics in natural history
2
304 - Factors affecting social behavior
1
340 - Law
1
361 - Social problems & social welfare in general
1
414 - Phonology & phonetics
1
510 - Mathematics
1
540 - Chemistry & allied sciences
1
657 - Accounting
1