Classification
658 - General management
380 - Commerce, communications & transportation
48
330 - Economics
30
600 - Technology
26
620 - Engineering & allied operations
23
000 - Computer science, information & general works
18
333 - Economics of land & energy
18
700 - The arts; fine & decorative arts
18
363 - Other social problems & services
16
900 - History & geography
12
500 - Natural sciences & mathematics
10
610 - Medicine & health
10
576 - Genetics & evolution
7
140 - Specific philosophical schools
5
320 - Political science
5
800 - Literature & rhetoric
5
338 - Production
4
387 - Water, air & space transportation
4
300 - Social sciences
3
302 - Social interaction
3
370 - Education
3
388 - Transportation; ground transportation
3
530 - Physics
3
551 - Geology, hydrology & meteorology
3
580 - Plants (Botany)
3
720 - Architecture
3
340 - Law
2
361 - Social problems & social welfare in general
2
381 - Commerce
2
629 - Other branches of engineering
2
670 - Manufacturing
2
001 - Knowledge
1
004 - Data processing & computer science
1
011 - Bibliographies
1
158 - Applied psychology
1
170 - Ethics
1
297 - Islam, Babism & Bahai Faith
1
304 - Factors affecting social behavior
1
331 - Labor economics
1
336 - Public finance
1
354 - Administration of economy & environment
1
364 - Criminology
1
384 - Communications; telecommunication
1
400 - Language
1
410 - Linguistics
1
612 - Human physiology
1
615 - Pharmacology & therapeutics
1
621 - Applied physics
1
630 - Agriculture & related technologies
1
650 - Management & auxiliary services
1
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