Classification
340 - Law
380 - Commerce, communications & transportation
600 - Technology
300 - Social sciences
3
363 - Other social problems & services
3
370 - Education
3
000 - Computer science, information & general works
2
200 - Religion
2
320 - Political science
2
100 - Philosophy & psychology
1
170 - Ethics
1
301 - Sociology & anthropology
1
330 - Economics
1
500 - Natural sciences & mathematics
1
530 - Physics
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
700 - The arts; fine & decorative arts
1
900 - History & geography
1