Classification
380 - Commerce, communications & transportation
600 - Technology
000 - Computer science, information & general works
3
320 - Political science
2
330 - Economics
2
340 - Law
2
900 - History & geography
2
140 - Specific philosophical schools
1
200 - Religion
1
304 - Factors affecting social behavior
1
576 - Genetics & evolution
1
630 - Agriculture & related technologies
1
700 - The arts; fine & decorative arts
1