Classification
800 - Literature & rhetoric
900 - History & geography
22
700 - The arts; fine & decorative arts
7
200 - Religion
4
333 - Economics of land & energy
4
000 - Computer science, information & general works
3
100 - Philosophy & psychology
3
320 - Political science
3
330 - Economics
3
380 - Commerce, communications & transportation
3
410 - Linguistics
3
610 - Medicine & health
3
340 - Law
2
363 - Other social problems & services
2
370 - Education
2
400 - Language
2
551 - Geology, hydrology & meteorology
2
600 - Technology
2
620 - Engineering & allied operations
2
880 - Hellenic literatures; classical Greek
2
882 - Classical Greek dramatic poetry & drama
2
070 - News media, journalism & publishing
1
120 - Epistemology, causation & humankind
1
140 - Specific philosophical schools
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
384 - Communications; telecommunication
1
500 - Natural sciences & mathematics
1
520 - Astronomy & allied sciences
1
580 - Plants (Botany)
1
630 - Agriculture & related technologies
1
658 - General management
1
720 - Architecture
1
833 - German fiction
1