Classification
140 - Specific philosophical schools
330 - Economics
6
700 - The arts; fine & decorative arts
6
000 - Computer science, information & general works
5
333 - Economics of land & energy
4
380 - Commerce, communications & transportation
4
610 - Medicine & health
4
297 - Islam, Babism & Bahai Faith
3
363 - Other social problems & services
3
620 - Engineering & allied operations
3
320 - Political science
2
340 - Law
2
400 - Language
2
551 - Geology, hydrology & meteorology
2
580 - Plants (Botany)
2
600 - Technology
2
658 - General management
2
800 - Literature & rhetoric
2
370 - Education
1
410 - Linguistics
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
540 - Chemistry & allied sciences
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
612 - Human physiology
1