Classification
000 - Computer science, information & general works
300 - Social sciences
320 - Political science
370 - Education
380 - Commerce, communications & transportation
100 - Philosophy & psychology
2
330 - Economics
2
600 - Technology
2
700 - The arts; fine & decorative arts
2
301 - Sociology & anthropology
1
340 - Law
1
363 - Other social problems & services
1
400 - Language
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
780 - Music
1
900 - History & geography
1