Classification
600 - Technology
20
620 - Engineering & allied operations
15
000 - Computer science, information & general works
13
700 - The arts; fine & decorative arts
12
333 - Economics of land & energy
10
900 - History & geography
9
363 - Other social problems & services
8
540 - Chemistry & allied sciences
8
330 - Economics
7
820 - English & Old English literatures
6
340 - Law
5
580 - Plants (Botany)
5
610 - Medicine & health
5
320 - Political science
3
410 - Linguistics
3
530 - Physics
3
140 - Specific philosophical schools
2
304 - Factors affecting social behavior
2
350 - Public administration & military science
2
500 - Natural sciences & mathematics
2
720 - Architecture
2
010 - Bibliography
1
360 - Social problems & services; associations
1
380 - Commerce, communications & transportation
1
400 - Language
1
576 - Genetics & evolution
1
780 - Music
1
942 - England & Wales
1