Classification
620 - Engineering & allied operations
600 - Technology
37
700 - The arts; fine & decorative arts
29
900 - History & geography
28
333 - Economics of land & energy
24
000 - Computer science, information & general works
23
380 - Commerce, communications & transportation
17
330 - Economics
14
363 - Other social problems & services
13
500 - Natural sciences & mathematics
13
658 - General management
12
610 - Medicine & health
9
576 - Genetics & evolution
7
720 - Architecture
7
630 - Agriculture & related technologies
6
140 - Specific philosophical schools
5
370 - Education
5
580 - Plants (Botany)
5
005 - Computer programming, programs & data
4
551 - Geology, hydrology & meteorology
4
304 - Factors affecting social behavior
3
320 - Political science
3
800 - Literature & rhetoric
3
004 - Data processing & computer science
2
384 - Communications; telecommunication
2
400 - Language
2
001 - Knowledge
1
006 - Special computer methods
1
158 - Applied psychology
1
200 - Religion
1
300 - Social sciences
1
331 - Labor economics
1
340 - Law
1
519 - Probabilities & applied mathematics
1
550 - Earth sciences
1
581 - Specific topics in natural history
1
687 - Clothing & accessories
1
745 - Decorative arts
1
791 - Public performances
1