Classification
540 - Chemistry & allied sciences
580 - Plants (Botany)
620 - Engineering & allied operations
700 - The arts; fine & decorative arts
600 - Technology
9
333 - Economics of land & energy
7
363 - Other social problems & services
7
380 - Commerce, communications & transportation
6
610 - Medicine & health
6
000 - Computer science, information & general works
4
140 - Specific philosophical schools
4
500 - Natural sciences & mathematics
4
612 - Human physiology
4
300 - Social sciences
3
330 - Economics
3
414 - Phonology & phonetics
3
551 - Geology, hydrology & meteorology
3
576 - Genetics & evolution
3
581 - Specific topics in natural history
3
900 - History & geography
3
340 - Law
1
370 - Education
1
400 - Language
1
657 - Accounting
1
658 - General management
1