Classification
620 - Engineering & allied operations
700 - The arts; fine & decorative arts
410 - Linguistics
12
600 - Technology
12
400 - Language
8
900 - History & geography
7
630 - Agriculture & related technologies
6
000 - Computer science, information & general works
5
610 - Medicine & health
5
140 - Specific philosophical schools
3
330 - Economics
3
380 - Commerce, communications & transportation
3
100 - Philosophy & psychology
2
300 - Social sciences
2
320 - Political science
2
500 - Natural sciences & mathematics
2
576 - Genetics & evolution
2
720 - Architecture
2
780 - Music
2
333 - Economics of land & energy
1
340 - Law
1
363 - Other social problems & services
1
370 - Education
1
398 - Folklore
1
530 - Physics
1
658 - General management
1
770 - Photography, photographs & computer art
1
800 - Literature & rhetoric
1