Classification
380 - Commerce, communications & transportation
700 - The arts; fine & decorative arts
330 - Economics
13
000 - Computer science, information & general works
9
333 - Economics of land & energy
9
363 - Other social problems & services
9
610 - Medicine & health
9
900 - History & geography
9
551 - Geology, hydrology & meteorology
7
320 - Political science
6
140 - Specific philosophical schools
5
340 - Law
5
370 - Education
5
576 - Genetics & evolution
4
600 - Technology
4
658 - General management
3
304 - Factors affecting social behavior
2
410 - Linguistics
2
612 - Human physiology
2
620 - Engineering & allied operations
2
630 - Agriculture & related technologies
2
720 - Architecture
2
200 - Religion
1
301 - Sociology & anthropology
1
400 - Language
1
500 - Natural sciences & mathematics
1
520 - Astronomy & allied sciences
1
530 - Physics
1
550 - Earth sciences
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
770 - Photography, photographs & computer art
1