Classification
330 - Economics
620 - Engineering & allied operations
800 - Literature & rhetoric
600 - Technology
13
700 - The arts; fine & decorative arts
13
900 - History & geography
11
363 - Other social problems & services
9
333 - Economics of land & energy
8
380 - Commerce, communications & transportation
5
000 - Computer science, information & general works
4
576 - Genetics & evolution
4
610 - Medicine & health
4
720 - Architecture
4
140 - Specific philosophical schools
3
580 - Plants (Botany)
3
658 - General management
3
370 - Education
2
160 - Logic
1
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
300 - Social sciences
1
301 - Sociology & anthropology
1
320 - Political science
1
340 - Law
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1