Classification
520 - Astronomy & allied sciences
47
005 - Computer programming, programs & data
13
000 - Computer science, information & general works
6
500 - Natural sciences & mathematics
3
620 - Engineering & allied operations
3
820 - English & Old English literatures
3
320 - Political science
2
330 - Economics
2
576 - Genetics & evolution
2
650 - Management & auxiliary services
2
700 - The arts; fine & decorative arts
2
130 - Parapsychology & occultism
1
301 - Sociology & anthropology
1
340 - Law
1
530 - Physics
1
600 - Technology
1
610 - Medicine & health
1
720 - Architecture
1
900 - History & geography
1