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