Classification
000 - Computer science, information & general works
330 - Economics
500 - Natural sciences & mathematics
658 - General management
600 - Technology
6
700 - The arts; fine & decorative arts
4
140 - Specific philosophical schools
2
333 - Economics of land & energy
2
363 - Other social problems & services
2
380 - Commerce, communications & transportation
2
610 - Medicine & health
2
620 - Engineering & allied operations
2
900 - History & geography
2
340 - Law
1
361 - Social problems & social welfare in general
1
400 - Language
1
530 - Physics
1
576 - Genetics & evolution
1
720 - Architecture
1
780 - Music
1