Classification
630 - Agriculture & related technologies
700 - The arts; fine & decorative arts
363 - Other social problems & services
14
000 - Computer science, information & general works
13
580 - Plants (Botany)
13
600 - Technology
13
330 - Economics
12
610 - Medicine & health
12
620 - Engineering & allied operations
11
333 - Economics of land & energy
10
900 - History & geography
7
551 - Geology, hydrology & meteorology
6
320 - Political science
5
340 - Law
5
304 - Factors affecting social behavior
4
380 - Commerce, communications & transportation
4
500 - Natural sciences & mathematics
4
581 - Specific topics in natural history
3
800 - Literature & rhetoric
3
140 - Specific philosophical schools
2
301 - Sociology & anthropology
2
361 - Social problems & social welfare in general
2
370 - Education
2
170 - Ethics
1
414 - Phonology & phonetics
1
530 - Physics
1
540 - Chemistry & allied sciences
1
657 - Accounting
1
658 - General management
1
770 - Photography, photographs & computer art
1