Classification
610 - Medicine & health
700 - The arts; fine & decorative arts
67
333 - Economics of land & energy
57
000 - Computer science, information & general works
51
600 - Technology
46
363 - Other social problems & services
36
580 - Plants (Botany)
33
620 - Engineering & allied operations
32
330 - Economics
22
380 - Commerce, communications & transportation
21
900 - History & geography
21
551 - Geology, hydrology & meteorology
20
140 - Specific philosophical schools
17
540 - Chemistry & allied sciences
13
630 - Agriculture & related technologies
11
320 - Political science
7
500 - Natural sciences & mathematics
6
576 - Genetics & evolution
6
581 - Specific topics in natural history
6
658 - General management
6
100 - Philosophy & psychology
5
612 - Human physiology
5
304 - Factors affecting social behavior
4
361 - Social problems & social welfare in general
4
414 - Phonology & phonetics
4
590 - Animals (Zoology)
4
720 - Architecture
4
800 - Literature & rhetoric
4
120 - Epistemology, causation & humankind
3
340 - Law
3
530 - Physics
3
370 - Education
2
400 - Language
2
550 - Earth sciences
2
615 - Pharmacology & therapeutics
2
170 - Ethics
1
297 - Islam, Babism & Bahai Faith
1
520 - Astronomy & allied sciences
1
657 - Accounting
1