Classification
800 - Literature & rhetoric
000 - Computer science, information & general works
16
700 - The arts; fine & decorative arts
13
363 - Other social problems & services
12
610 - Medicine & health
11
330 - Economics
10
333 - Economics of land & energy
8
580 - Plants (Botany)
8
320 - Political science
7
140 - Specific philosophical schools
6
380 - Commerce, communications & transportation
6
600 - Technology
6
900 - History & geography
5
410 - Linguistics
4
551 - Geology, hydrology & meteorology
4
576 - Genetics & evolution
4
630 - Agriculture & related technologies
4
658 - General management
4
338 - Production
3
158 - Applied psychology
2
304 - Factors affecting social behavior
2
370 - Education
2
500 - Natural sciences & mathematics
2
581 - Specific topics in natural history
2
650 - Management & auxiliary services
2
720 - Architecture
2
100 - Philosophy & psychology
1
170 - Ethics
1
200 - Religion
1
301 - Sociology & anthropology
1
340 - Law
1
361 - Social problems & social welfare in general
1
414 - Phonology & phonetics
1
520 - Astronomy & allied sciences
1
530 - Physics
1
620 - Engineering & allied operations
1
657 - Accounting
1
791 - Public performances
1