Classification
330 - Economics
900 - History & geography
320 - Political science
27
576 - Genetics & evolution
14
600 - Technology
13
700 - The arts; fine & decorative arts
13
620 - Engineering & allied operations
10
333 - Economics of land & energy
9
370 - Education
6
100 - Philosophy & psychology
5
363 - Other social problems & services
5
380 - Commerce, communications & transportation
5
610 - Medicine & health
5
000 - Computer science, information & general works
4
551 - Geology, hydrology & meteorology
4
720 - Architecture
4
340 - Law
3
400 - Language
3
658 - General management
3
140 - Specific philosophical schools
2
300 - Social sciences
2
410 - Linguistics
2
800 - Literature & rhetoric
2
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
580 - Plants (Botany)
1
770 - Photography, photographs & computer art
1