Classification
363 - Other social problems & services
551 - Geology, hydrology & meteorology
630 - Agriculture & related technologies
700 - The arts; fine & decorative arts
10
600 - Technology
9
000 - Computer science, information & general works
8
330 - Economics
8
333 - Economics of land & energy
8
620 - Engineering & allied operations
8
320 - Political science
6
500 - Natural sciences & mathematics
4
580 - Plants (Botany)
4
610 - Medicine & health
4
800 - Literature & rhetoric
3
300 - Social sciences
2
370 - Education
2
540 - Chemistry & allied sciences
2
581 - Specific topics in natural history
2
304 - Factors affecting social behavior
1
340 - Law
1
350 - Public administration & military science
1
380 - Commerce, communications & transportation
1
414 - Phonology & phonetics
1
530 - Physics
1
900 - History & geography
1