Classification
100 - Philosophy & psychology
380 - Commerce, communications & transportation
2
400 - Language
2
410 - Linguistics
700 - The arts; fine & decorative arts
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
170 - Ethics
1
320 - Political science
1
333 - Economics of land & energy
1
340 - Law
1
370 - Education
1