Classification
540 - Chemistry & allied sciences
580 - Plants (Botany)
610 - Medicine & health
50
000 - Computer science, information & general works
47
700 - The arts; fine & decorative arts
47
333 - Economics of land & energy
27
600 - Technology
26
363 - Other social problems & services
23
620 - Engineering & allied operations
23
140 - Specific philosophical schools
15
380 - Commerce, communications & transportation
13
581 - Specific topics in natural history
13
612 - Human physiology
13
576 - Genetics & evolution
12
330 - Economics
11
414 - Phonology & phonetics
11
900 - History & geography
10
500 - Natural sciences & mathematics
7
304 - Factors affecting social behavior
4
530 - Physics
4
615 - Pharmacology & therapeutics
4
300 - Social sciences
3
551 - Geology, hydrology & meteorology
3
630 - Agriculture & related technologies
3
340 - Law
2
720 - Architecture
2
320 - Political science
1
370 - Education
1
400 - Language
1
590 - Animals (Zoology)
1
657 - Accounting
1
658 - General management
1
800 - Literature & rhetoric
1