Classification
000 - Computer science, information & general works
1
001 - Knowledge
1
230 - Christianity & Christian theology
1
300 - Social sciences
1
320 - Political science
2
330 - Economics
2
510 - Mathematics
1
519 - Probabilities & applied mathematics
2
530 - Physics
1
531 - Classical mechanics; solid mechanics
1
535 - Light & infrared & ultraviolet phenomena
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
620 - Engineering & allied operations
1
621 - Applied physics
1
900 - History & geography
2