Classification
380 - Commerce, communications & transportation
620 - Engineering & allied operations
330 - Economics
8
384 - Communications; telecommunication
5
500 - Natural sciences & mathematics
5
000 - Computer science, information & general works
4
600 - Technology
4
900 - History & geography
4
363 - Other social problems & services
3
700 - The arts; fine & decorative arts
3
808 - Rhetoric & collections of literature
3
004 - Data processing & computer science
2
140 - Specific philosophical schools
2
331 - Labor economics
2
333 - Economics of land & energy
2
745 - Decorative arts
2
006 - Special computer methods
1
340 - Law
1
381 - Commerce
1
400 - Language
1
576 - Genetics & evolution
1
621 - Applied physics
1