Classification
340 - Law
380 - Commerce, communications & transportation
330 - Economics
61
333 - Economics of land & energy
43
600 - Technology
36
700 - The arts; fine & decorative arts
36
000 - Computer science, information & general works
32
363 - Other social problems & services
29
900 - History & geography
26
320 - Political science
23
620 - Engineering & allied operations
23
610 - Medicine & health
19
140 - Specific philosophical schools
15
500 - Natural sciences & mathematics
12
576 - Genetics & evolution
12
580 - Plants (Botany)
11
530 - Physics
8
630 - Agriculture & related technologies
8
300 - Social sciences
7
400 - Language
7
551 - Geology, hydrology & meteorology
7
720 - Architecture
7
170 - Ethics
6
370 - Education
6
658 - General management
6
200 - Religion
4
100 - Philosophy & psychology
3
304 - Factors affecting social behavior
3
410 - Linguistics
3
301 - Sociology & anthropology
2
414 - Phonology & phonetics
2
581 - Specific topics in natural history
2
780 - Music
2
791 - Public performances
2
800 - Literature & rhetoric
2
350 - Public administration & military science
1
364 - Criminology
1
657 - Accounting
1
770 - Photography, photographs & computer art
1