Classification
000 - Computer science, information & general works
330 - Economics
380 - Commerce, communications & transportation
600 - Technology
658 - General management
140 - Specific philosophical schools
4
610 - Medicine & health
4
333 - Economics of land & energy
3
363 - Other social problems & services
3
620 - Engineering & allied operations
3
700 - The arts; fine & decorative arts
3
900 - History & geography
3
576 - Genetics & evolution
2
320 - Political science
1
370 - Education
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
551 - Geology, hydrology & meteorology
1
581 - Specific topics in natural history
1
630 - Agriculture & related technologies
1
720 - Architecture
1