Classification
610 - Medicine & health
700 - The arts; fine & decorative arts
71
600 - Technology
53
333 - Economics of land & energy
35
620 - Engineering & allied operations
35
580 - Plants (Botany)
28
363 - Other social problems & services
27
140 - Specific philosophical schools
26
000 - Computer science, information & general works
25
900 - History & geography
25
330 - Economics
17
380 - Commerce, communications & transportation
15
576 - Genetics & evolution
8
414 - Phonology & phonetics
7
612 - Human physiology
7
500 - Natural sciences & mathematics
6
630 - Agriculture & related technologies
6
340 - Law
5
370 - Education
5
800 - Literature & rhetoric
5
530 - Physics
4
551 - Geology, hydrology & meteorology
4
658 - General management
4
720 - Architecture
4
170 - Ethics
3
300 - Social sciences
3
320 - Political science
2
540 - Chemistry & allied sciences
2
615 - Pharmacology & therapeutics
2
100 - Philosophy & psychology
1
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
350 - Public administration & military science
1
361 - Social problems & social welfare in general
1
581 - Specific topics in natural history
1
780 - Music
1