Classification
320 - Political science
2
360 - Social problems & services; associations
551 - Geology, hydrology & meteorology
610 - Medicine & health
2
700 - The arts; fine & decorative arts
2
900 - History & geography
2
000 - Computer science, information & general works
1
330 - Economics
1
363 - Other social problems & services
1
370 - Education
1
380 - Commerce, communications & transportation
1
400 - Language
1
600 - Technology
1
620 - Engineering & allied operations
1