Classification
005 - Computer programming, programs & data
1
300 - Social sciences
2
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
3
305 - Social groups
1
320 - Political science
36
330 - Economics
53
331 - Labor economics
1
332 - Financial economics
1
333 - Economics of land & energy
2
340 - Law
24
363 - Other social problems & services
2
370 - Education
4
380 - Commerce, communications & transportation
2
400 - Language
2
410 - Linguistics
1
500 - Natural sciences & mathematics
1
551 - Geology, hydrology & meteorology
1
581 - Specific topics in natural history
1
600 - Technology
1
620 - Engineering & allied operations
1
700 - The arts; fine & decorative arts
3
800 - Literature & rhetoric
1
900 - History & geography
4