Classification
140 - Specific philosophical schools
330 - Economics
2
363 - Other social problems & services
2
380 - Commerce, communications & transportation
2
610 - Medicine & health
620 - Engineering & allied operations
2
700 - The arts; fine & decorative arts
2
720 - Architecture
900 - History & geography
2
000 - Computer science, information & general works
1
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
300 - Social sciences
1
301 - Sociology & anthropology
1
340 - Law
1
370 - Education
1
600 - Technology
1
800 - Literature & rhetoric
1