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