Classification
330 - Economics
658 - General management
300 - Social sciences
21
302 - Social interaction
21
331 - Labor economics
15
338 - Production
10
500 - Natural sciences & mathematics
8
650 - Management & auxiliary services
7
670 - Manufacturing
7
158 - Applied psychology
5
001 - Knowledge
3
100 - Philosophy & psychology
3
153 - Mental processes & intelligence
3
332 - Financial economics
3
370 - Education
3
381 - Commerce
3
620 - Engineering & allied operations
3
700 - The arts; fine & decorative arts
3
900 - History & geography
3
320 - Political science
2
340 - Law
2
384 - Communications; telecommunication
2
400 - Language
2
600 - Technology
2
000 - Computer science, information & general works
1
006 - Special computer methods
1
011 - Bibliographies
1
333 - Economics of land & energy
1
380 - Commerce, communications & transportation
1
410 - Linguistics
1
530 - Physics
1
540 - Chemistry & allied sciences
1
576 - Genetics & evolution
1
720 - Architecture
1
770 - Photography, photographs & computer art
1
780 - Music
1