Classification
580 - Plants (Botany)
700 - The arts; fine & decorative arts
30
000 - Computer science, information & general works
24
333 - Economics of land & energy
23
600 - Technology
22
620 - Engineering & allied operations
21
363 - Other social problems & services
13
610 - Medicine & health
11
900 - History & geography
11
380 - Commerce, communications & transportation
10
414 - Phonology & phonetics
9
140 - Specific philosophical schools
8
576 - Genetics & evolution
7
540 - Chemistry & allied sciences
6
551 - Geology, hydrology & meteorology
6
630 - Agriculture & related technologies
6
304 - Factors affecting social behavior
4
330 - Economics
4
370 - Education
4
500 - Natural sciences & mathematics
4
581 - Specific topics in natural history
4
612 - Human physiology
4
300 - Social sciences
3
340 - Law
3
320 - Political science
2
720 - Architecture
2
170 - Ethics
1
400 - Language
1
410 - Linguistics
1
530 - Physics
1
658 - General management
1
791 - Public performances
1