Classification
370 - Education
800 - Literature & rhetoric
900 - History & geography
333 - Economics of land & energy
9
700 - The arts; fine & decorative arts
9
400 - Language
8
600 - Technology
7
100 - Philosophy & psychology
6
300 - Social sciences
5
140 - Specific philosophical schools
4
330 - Economics
4
363 - Other social problems & services
4
610 - Medicine & health
4
200 - Religion
3
320 - Political science
3
410 - Linguistics
3
301 - Sociology & anthropology
2
380 - Commerce, communications & transportation
2
620 - Engineering & allied operations
2
720 - Architecture
2
000 - Computer science, information & general works
1
120 - Epistemology, causation & humankind
1
170 - Ethics
1
297 - Islam, Babism & Bahai Faith
1
304 - Factors affecting social behavior
1
340 - Law
1
500 - Natural sciences & mathematics
1
520 - Astronomy & allied sciences
1
530 - Physics
1
658 - General management
1
791 - Public performances
1