Classification
000 - Computer science, information & general works
320 - Political science
330 - Economics
600 - Technology
620 - Engineering & allied operations
333 - Economics of land & energy
16
700 - The arts; fine & decorative arts
14
900 - History & geography
12
363 - Other social problems & services
11
630 - Agriculture & related technologies
9
140 - Specific philosophical schools
5
300 - Social sciences
5
380 - Commerce, communications & transportation
5
610 - Medicine & health
5
370 - Education
4
551 - Geology, hydrology & meteorology
4
580 - Plants (Botany)
4
100 - Philosophy & psychology
3
170 - Ethics
3
658 - General management
3
720 - Architecture
3
410 - Linguistics
2
530 - Physics
2
581 - Specific topics in natural history
2
780 - Music
2
340 - Law
1
361 - Social problems & social welfare in general
1
400 - Language
1
500 - Natural sciences & mathematics
1
540 - Chemistry & allied sciences
1
576 - Genetics & evolution
1
657 - Accounting
1
770 - Photography, photographs & computer art
1