Classification
610 - Medicine & health
658 - General management
000 - Computer science, information & general works
25
330 - Economics
25
700 - The arts; fine & decorative arts
19
333 - Economics of land & energy
16
600 - Technology
16
140 - Specific philosophical schools
14
363 - Other social problems & services
14
370 - Education
11
380 - Commerce, communications & transportation
10
630 - Agriculture & related technologies
10
580 - Plants (Botany)
9
500 - Natural sciences & mathematics
8
620 - Engineering & allied operations
7
320 - Political science
5
551 - Geology, hydrology & meteorology
5
576 - Genetics & evolution
5
900 - History & geography
4
300 - Social sciences
3
338 - Production
3
361 - Social problems & social welfare in general
3
400 - Language
3
581 - Specific topics in natural history
3
100 - Philosophy & psychology
1
158 - Applied psychology
1
170 - Ethics
1
297 - Islam, Babism & Bahai Faith
1
302 - Social interaction
1
340 - Law
1
384 - Communications; telecommunication
1
410 - Linguistics
1
530 - Physics
1
612 - Human physiology
1
650 - Management & auxiliary services
1
720 - Architecture
1
800 - Literature & rhetoric
1