Classification
610 - Medicine & health
700 - The arts; fine & decorative arts
51
363 - Other social problems & services
44
333 - Economics of land & energy
40
140 - Specific philosophical schools
35
370 - Education
33
000 - Computer science, information & general works
29
330 - Economics
29
600 - Technology
26
100 - Philosophy & psychology
22
320 - Political science
21
380 - Commerce, communications & transportation
21
620 - Engineering & allied operations
14
900 - History & geography
14
306 - Culture & institutions
12
580 - Plants (Botany)
12
551 - Geology, hydrology & meteorology
10
658 - General management
9
300 - Social sciences
7
500 - Natural sciences & mathematics
7
780 - Music
7
581 - Specific topics in natural history
6
612 - Human physiology
6
170 - Ethics
5
200 - Religion
5
340 - Law
5
720 - Architecture
5
361 - Social problems & social welfare in general
4
630 - Agriculture & related technologies
4
520 - Astronomy & allied sciences
3
304 - Factors affecting social behavior
2
540 - Chemistry & allied sciences
2
576 - Genetics & evolution
2
296 - Judaism
1
297 - Islam, Babism & Bahai Faith
1
350 - Public administration & military science
1
360 - Social problems & services; associations
1
400 - Language
1
657 - Accounting
1
791 - Public performances
1
800 - Literature & rhetoric
1