Classification
580 - Plants (Botany)
700 - The arts; fine & decorative arts
620 - Engineering & allied operations
169
600 - Technology
152
900 - History & geography
109
333 - Economics of land & energy
86
363 - Other social problems & services
64
610 - Medicine & health
55
000 - Computer science, information & general works
53
630 - Agriculture & related technologies
39
330 - Economics
35
380 - Commerce, communications & transportation
30
140 - Specific philosophical schools
25
576 - Genetics & evolution
21
551 - Geology, hydrology & meteorology
20
414 - Phonology & phonetics
19
540 - Chemistry & allied sciences
15
500 - Natural sciences & mathematics
13
658 - General management
12
720 - Architecture
11
340 - Law
10
800 - Literature & rhetoric
8
581 - Specific topics in natural history
7
300 - Social sciences
6
320 - Political science
6
612 - Human physiology
6
370 - Education
5
170 - Ethics
4
100 - Philosophy & psychology
3
400 - Language
3
770 - Photography, photographs & computer art
3
304 - Factors affecting social behavior
2
530 - Physics
2
615 - Pharmacology & therapeutics
2
361 - Social problems & social welfare in general
1
657 - Accounting
1
791 - Public performances
1