Classification
400 - Language
700 - The arts; fine & decorative arts
15
000 - Computer science, information & general works
13
600 - Technology
12
333 - Economics of land & energy
10
140 - Specific philosophical schools
8
370 - Education
8
620 - Engineering & allied operations
8
900 - History & geography
8
410 - Linguistics
7
100 - Philosophy & psychology
6
380 - Commerce, communications & transportation
6
330 - Economics
5
363 - Other social problems & services
5
500 - Natural sciences & mathematics
5
610 - Medicine & health
5
320 - Political science
3
530 - Physics
3
576 - Genetics & evolution
3
120 - Epistemology, causation & humankind
2
340 - Law
2
551 - Geology, hydrology & meteorology
2
630 - Agriculture & related technologies
2
800 - Literature & rhetoric
2
170 - Ethics
1
520 - Astronomy & allied sciences
1
540 - Chemistry & allied sciences
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
658 - General management
1
720 - Architecture
1