Classification
000 - Computer science, information & general works
658 - General management
135
338 - Production
132
330 - Economics
79
153 - Mental processes & intelligence
35
650 - Management & auxiliary services
33
600 - Technology
18
384 - Communications; telecommunication
13
333 - Economics of land & energy
11
380 - Commerce, communications & transportation
11
302 - Social interaction
8
320 - Political science
8
700 - The arts; fine & decorative arts
8
300 - Social sciences
7
620 - Engineering & allied operations
7
140 - Specific philosophical schools
5
158 - Applied psychology
5
331 - Labor economics
5
332 - Financial economics
5
381 - Commerce
5
576 - Genetics & evolution
5
363 - Other social problems & services
4
610 - Medicine & health
4
630 - Agriculture & related technologies
4
670 - Manufacturing
4
745 - Decorative arts
4
304 - Factors affecting social behavior
3
500 - Natural sciences & mathematics
3
551 - Geology, hydrology & meteorology
3
370 - Education
2
520 - Astronomy & allied sciences
2
530 - Physics
2
900 - History & geography
2
001 - Knowledge
1
006 - Special computer methods
1
011 - Bibliographies
1
160 - Logic
1
170 - Ethics
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1