Classification
576 - Genetics & evolution
700 - The arts; fine & decorative arts
000 - Computer science, information & general works
40
333 - Economics of land & energy
35
600 - Technology
35
620 - Engineering & allied operations
31
900 - History & geography
26
500 - Natural sciences & mathematics
21
380 - Commerce, communications & transportation
17
363 - Other social problems & services
14
340 - Law
13
580 - Plants (Botany)
13
330 - Economics
11
610 - Medicine & health
10
140 - Specific philosophical schools
9
414 - Phonology & phonetics
9
720 - Architecture
8
540 - Chemistry & allied sciences
6
581 - Specific topics in natural history
6
320 - Political science
5
530 - Physics
5
551 - Geology, hydrology & meteorology
5
300 - Social sciences
3
612 - Human physiology
3
658 - General management
2
800 - Literature & rhetoric
2
160 - Logic
1
304 - Factors affecting social behavior
1
370 - Education
1
400 - Language
1
410 - Linguistics
1
630 - Agriculture & related technologies
1