Classification
000 - Computer science, information & general works
3
333 - Economics of land & energy
3
363 - Other social problems & services
530 - Physics
600 - Technology
3
700 - The arts; fine & decorative arts
3
300 - Social sciences
1
320 - Political science
1
330 - Economics
1
370 - Education
1
380 - Commerce, communications & transportation
1
500 - Natural sciences & mathematics
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
650 - Management & auxiliary services
1
900 - History & geography
1