Classification
000 - Computer science, information & general works
363 - Other social problems & services
330 - Economics
32
333 - Economics of land & energy
31
700 - The arts; fine & decorative arts
26
610 - Medicine & health
23
551 - Geology, hydrology & meteorology
19
600 - Technology
16
320 - Political science
15
380 - Commerce, communications & transportation
14
140 - Specific philosophical schools
13
580 - Plants (Botany)
12
900 - History & geography
9
630 - Agriculture & related technologies
8
581 - Specific topics in natural history
7
340 - Law
6
370 - Education
6
620 - Engineering & allied operations
6
720 - Architecture
6
304 - Factors affecting social behavior
5
414 - Phonology & phonetics
4
576 - Genetics & evolution
4
658 - General management
4
530 - Physics
3
657 - Accounting
3
170 - Ethics
2
540 - Chemistry & allied sciences
2
550 - Earth sciences
2
300 - Social sciences
1
520 - Astronomy & allied sciences
1
612 - Human physiology
1
615 - Pharmacology & therapeutics
1