Classification
300 - Social sciences
3
370 - Education
620 - Engineering & allied operations
900 - History & geography
3
100 - Philosophy & psychology
2
380 - Commerce, communications & transportation
2
600 - Technology
2
610 - Medicine & health
2
140 - Specific philosophical schools
1
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
301 - Sociology & anthropology
1
320 - Political science
1
330 - Economics
1
333 - Economics of land & energy
1
340 - Law
1
363 - Other social problems & services
1
500 - Natural sciences & mathematics
1
700 - The arts; fine & decorative arts
1
720 - Architecture
1
800 - Literature & rhetoric
1