Classification
000 - Computer science, information & general works
300 - Social sciences
320 - Political science
2
330 - Economics
363 - Other social problems & services
380 - Commerce, communications & transportation
600 - Technology
140 - Specific philosophical schools
1
200 - Religion
1
340 - Law
1
370 - Education
1
620 - Engineering & allied operations
1
658 - General management
1
900 - History & geography
1