Classification
380 - Commerce, communications & transportation
620 - Engineering & allied operations
600 - Technology
10
333 - Economics of land & energy
9
000 - Computer science, information & general works
8
330 - Economics
8
500 - Natural sciences & mathematics
8
700 - The arts; fine & decorative arts
6
384 - Communications; telecommunication
5
808 - Rhetoric & collections of literature
3
900 - History & geography
3
004 - Data processing & computer science
2
300 - Social sciences
2
331 - Labor economics
2
363 - Other social problems & services
2
745 - Decorative arts
2
006 - Special computer methods
1
140 - Specific philosophical schools
1
301 - Sociology & anthropology
1
381 - Commerce
1
530 - Physics
1
576 - Genetics & evolution
1
610 - Medicine & health
1
621 - Applied physics
1
630 - Agriculture & related technologies
1
720 - Architecture
1
780 - Music
1