Classification
380 - Commerce, communications & transportation
400 - Language
000 - Computer science, information & general works
13
600 - Technology
13
700 - The arts; fine & decorative arts
11
610 - Medicine & health
10
330 - Economics
9
900 - History & geography
9
140 - Specific philosophical schools
8
363 - Other social problems & services
8
370 - Education
8
620 - Engineering & allied operations
7
333 - Economics of land & energy
6
720 - Architecture
5
320 - Political science
4
410 - Linguistics
4
300 - Social sciences
3
340 - Law
2
540 - Chemistry & allied sciences
2
580 - Plants (Botany)
2
658 - General management
2
800 - Literature & rhetoric
2
170 - Ethics
1
500 - Natural sciences & mathematics
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
791 - Public performances
1