Classification
000 - Computer science, information & general works
2
200 - Religion
330 - Economics
2
333 - Economics of land & energy
340 - Law
2
363 - Other social problems & services
2
380 - Commerce, communications & transportation
2
700 - The arts; fine & decorative arts
2
304 - Factors affecting social behavior
1
320 - Political science
1
370 - Education
1
410 - Linguistics
1
600 - Technology
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
900 - History & geography
1