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