Classification
333 - Economics of land & energy
700 - The arts; fine & decorative arts
15
330 - Economics
11
600 - Technology
11
000 - Computer science, information & general works
10
363 - Other social problems & services
10
380 - Commerce, communications & transportation
10
610 - Medicine & health
8
580 - Plants (Botany)
7
900 - History & geography
7
576 - Genetics & evolution
6
620 - Engineering & allied operations
6
630 - Agriculture & related technologies
6
140 - Specific philosophical schools
5
320 - Political science
5
658 - General management
5
340 - Law
4
370 - Education
4
100 - Philosophy & psychology
3
170 - Ethics
3
551 - Geology, hydrology & meteorology
3
300 - Social sciences
2
304 - Factors affecting social behavior
2
400 - Language
2
540 - Chemistry & allied sciences
2
720 - Architecture
2
800 - Literature & rhetoric
2
120 - Epistemology, causation & humankind
1
200 - Religion
1
361 - Social problems & social welfare in general
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
530 - Physics
1
581 - Specific topics in natural history
1