Classification
140 - Specific philosophical schools
330 - Economics
610 - Medicine & health
620 - Engineering & allied operations
600 - Technology
13
333 - Economics of land & energy
10
363 - Other social problems & services
10
700 - The arts; fine & decorative arts
9
900 - History & geography
7
000 - Computer science, information & general works
6
380 - Commerce, communications & transportation
6
630 - Agriculture & related technologies
5
658 - General management
3
720 - Architecture
3
297 - Islam, Babism & Bahai Faith
2
300 - Social sciences
2
301 - Sociology & anthropology
2
370 - Education
2
580 - Plants (Botany)
2
581 - Specific topics in natural history
2
800 - Literature & rhetoric
2
100 - Philosophy & psychology
1
200 - Religion
1
304 - Factors affecting social behavior
1
320 - Political science
1
340 - Law
1
361 - Social problems & social welfare in general
1
500 - Natural sciences & mathematics
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1