Classification
000 - Computer science, information & general works
4
140 - Specific philosophical schools
1
304 - Factors affecting social behavior
1
320 - Political science
4
330 - Economics
6
333 - Economics of land & energy
6
340 - Law
3
363 - Other social problems & services
5
370 - Education
3
380 - Commerce, communications & transportation
6
414 - Phonology & phonetics
2
500 - Natural sciences & mathematics
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
581 - Specific topics in natural history
1
600 - Technology
4
610 - Medicine & health
3
620 - Engineering & allied operations
1
657 - Accounting
1
700 - The arts; fine & decorative arts
720 - Architecture
2
900 - History & geography
4