Classification
630 - Agriculture & related technologies
700 - The arts; fine & decorative arts
11
000 - Computer science, information & general works
8
600 - Technology
8
363 - Other social problems & services
7
580 - Plants (Botany)
6
610 - Medicine & health
6
620 - Engineering & allied operations
6
900 - History & geography
5
330 - Economics
4
333 - Economics of land & energy
4
551 - Geology, hydrology & meteorology
4
320 - Political science
3
540 - Chemistry & allied sciences
3
140 - Specific philosophical schools
2
581 - Specific topics in natural history
2
304 - Factors affecting social behavior
1
340 - Law
1
350 - Public administration & military science
1
361 - Social problems & social welfare in general
1
380 - Commerce, communications & transportation
1
612 - Human physiology
1
658 - General management
1
770 - Photography, photographs & computer art
1